./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a --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 a27e6fc2049c9dc12360bd8cd7682ef33f4a19a5a5a6c0e7a780c3703a0494b5 --- 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-b5237d8 [2022-11-21 16:36:00,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:36:00,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:36:00,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:36:00,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:36:00,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:36:00,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:36:00,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:36:00,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:36:00,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:36:00,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:36:00,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:36:00,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:36:00,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:36:00,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:36:00,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:36:00,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:36:00,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:36:00,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:36:00,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:36:00,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:36:00,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:36:00,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:36:00,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:36:00,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:36:00,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:36:00,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:36:00,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:36:00,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:36:00,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:36:00,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:36:00,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:36:00,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:36:00,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:36:00,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:36:00,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:36:00,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:36:00,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:36:00,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:36:00,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:36:00,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:36:00,302 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 16:36:00,342 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:36:00,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:36:00,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:36:00,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:36:00,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:36:00,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:36:00,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:36:00,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:36:00,346 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:36:00,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:36:00,347 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:36:00,347 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:36:00,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:36:00,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:36:00,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:36:00,348 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 16:36:00,349 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 16:36:00,349 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 16:36:00,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:36:00,349 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:36:00,349 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:36:00,350 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:36:00,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:36:00,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:36:00,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:36:00,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:36:00,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:36:00,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:36:00,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:36:00,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:36:00,352 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_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a27e6fc2049c9dc12360bd8cd7682ef33f4a19a5a5a6c0e7a780c3703a0494b5 [2022-11-21 16:36:00,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:36:00,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:36:00,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:36:00,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:36:00,710 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:36:00,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i [2022-11-21 16:36:03,851 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:36:04,159 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:36:04,160 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i [2022-11-21 16:36:04,185 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/data/539e91e6c/6a46eb0865094f22aad8c1ba997c1e94/FLAG4bfb05081 [2022-11-21 16:36:04,199 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/data/539e91e6c/6a46eb0865094f22aad8c1ba997c1e94 [2022-11-21 16:36:04,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:36:04,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:36:04,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:36:04,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:36:04,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:36:04,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:36:04" (1/1) ... [2022-11-21 16:36:04,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b49c2f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:04, skipping insertion in model container [2022-11-21 16:36:04,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:36:04" (1/1) ... [2022-11-21 16:36:04,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:36:04,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:36:04,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:36:04,714 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-21 16:36:04,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@717789cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:04, skipping insertion in model container [2022-11-21 16:36:04,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:36:04,716 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-21 16:36:04,719 INFO L158 Benchmark]: Toolchain (without parser) took 514.28ms. Allocated memory is still 109.1MB. Free memory was 72.9MB in the beginning and 61.3MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:36:04,719 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:36:04,720 INFO L158 Benchmark]: CACSL2BoogieTranslator took 511.53ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 61.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:36:04,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 511.53ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 61.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 575]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a --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 a27e6fc2049c9dc12360bd8cd7682ef33f4a19a5a5a6c0e7a780c3703a0494b5 --- 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-b5237d8 [2022-11-21 16:36:07,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:36:07,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:36:07,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:36:07,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:36:07,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:36:07,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:36:07,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:36:07,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:36:07,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:36:07,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:36:07,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:36:07,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:36:07,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:36:07,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:36:07,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:36:07,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:36:07,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:36:07,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:36:07,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:36:07,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:36:07,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:36:07,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:36:07,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:36:07,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:36:07,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:36:07,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:36:07,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:36:07,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:36:07,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:36:07,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:36:07,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:36:07,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:36:07,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:36:07,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:36:07,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:36:07,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:36:07,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:36:07,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:36:07,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:36:07,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:36:07,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-21 16:36:07,333 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:36:07,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:36:07,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:36:07,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:36:07,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:36:07,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:36:07,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:36:07,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:36:07,338 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:36:07,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:36:07,339 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:36:07,339 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:36:07,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:36:07,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:36:07,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:36:07,341 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 16:36:07,341 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 16:36:07,341 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 16:36:07,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:36:07,342 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:36:07,342 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 16:36:07,343 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 16:36:07,343 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:36:07,343 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:36:07,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:36:07,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:36:07,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:36:07,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:36:07,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:36:07,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:36:07,346 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 16:36:07,346 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 16:36:07,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 16:36:07,347 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_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a27e6fc2049c9dc12360bd8cd7682ef33f4a19a5a5a6c0e7a780c3703a0494b5 [2022-11-21 16:36:07,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:36:07,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:36:07,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:36:07,842 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:36:07,843 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:36:07,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i [2022-11-21 16:36:11,151 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:36:11,453 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:36:11,454 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i [2022-11-21 16:36:11,466 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/data/f9fe8550c/0154f2570a07447db3be241957e2276b/FLAGe22ebf30c [2022-11-21 16:36:11,502 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/data/f9fe8550c/0154f2570a07447db3be241957e2276b [2022-11-21 16:36:11,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:36:11,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:36:11,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:36:11,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:36:11,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:36:11,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:36:11" (1/1) ... [2022-11-21 16:36:11,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec7f071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:11, skipping insertion in model container [2022-11-21 16:36:11,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:36:11" (1/1) ... [2022-11-21 16:36:11,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:36:11,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:36:11,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:36:11,894 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-21 16:36:11,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:36:11,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:36:11,950 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:36:12,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:36:12,042 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:36:12,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:12 WrapperNode [2022-11-21 16:36:12,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:36:12,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:36:12,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:36:12,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:36:12,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:12" (1/1) ... [2022-11-21 16:36:12,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:12" (1/1) ... [2022-11-21 16:36:12,131 INFO L138 Inliner]: procedures = 120, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2022-11-21 16:36:12,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:36:12,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:36:12,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:36:12,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:36:12,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:12" (1/1) ... [2022-11-21 16:36:12,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:12" (1/1) ... [2022-11-21 16:36:12,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:12" (1/1) ... [2022-11-21 16:36:12,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:12" (1/1) ... [2022-11-21 16:36:12,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:12" (1/1) ... [2022-11-21 16:36:12,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:12" (1/1) ... [2022-11-21 16:36:12,158 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:12" (1/1) ... [2022-11-21 16:36:12,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:12" (1/1) ... [2022-11-21 16:36:12,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:36:12,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:36:12,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:36:12,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:36:12,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:12" (1/1) ... [2022-11-21 16:36:12,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:36:12,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:36:12,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:36:12,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:36:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:36:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:36:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 16:36:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 16:36:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:36:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 16:36:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 16:36:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:36:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:36:12,435 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:36:12,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:36:12,918 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:36:12,924 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:36:12,925 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:36:12,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:36:12 BoogieIcfgContainer [2022-11-21 16:36:12,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:36:12,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:36:12,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:36:12,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:36:12,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:36:11" (1/3) ... [2022-11-21 16:36:12,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30241f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:36:12, skipping insertion in model container [2022-11-21 16:36:12,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:12" (2/3) ... [2022-11-21 16:36:12,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30241f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:36:12, skipping insertion in model container [2022-11-21 16:36:12,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:36:12" (3/3) ... [2022-11-21 16:36:12,954 INFO L112 eAbstractionObserver]: Analyzing ICFG array-realloc-2.i [2022-11-21 16:36:13,000 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:36:13,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-21 16:36:13,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:36:13,075 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;@288b759e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:36:13,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-21 16:36:13,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:13,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 16:36:13,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:13,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 16:36:13,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:13,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:13,096 INFO L85 PathProgramCache]: Analyzing trace with hash 925662, now seen corresponding path program 1 times [2022-11-21 16:36:13,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:13,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779675253] [2022-11-21 16:36:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:13,111 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:13,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:13,117 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:13,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-21 16:36:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:13,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:36:13,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:13,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:13,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:13,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779675253] [2022-11-21 16:36:13,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779675253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:13,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:13,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:36:13,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216482705] [2022-11-21 16:36:13,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:13,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:36:13,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:13,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:36:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:36:13,379 INFO L87 Difference]: Start difference. First operand has 36 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 35 states have internal predecessors, (41), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:13,488 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-21 16:36:13,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:36:13,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-21 16:36:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:13,500 INFO L225 Difference]: With dead ends: 37 [2022-11-21 16:36:13,500 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 16:36:13,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:36:13,508 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:13,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:36:13,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 16:36:13,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-21 16:36:13,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.85) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:13,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-11-21 16:36:13,546 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 4 [2022-11-21 16:36:13,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:13,547 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-11-21 16:36:13,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:13,547 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-11-21 16:36:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 16:36:13,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:13,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 16:36:13,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-21 16:36:13,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:13,755 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:13,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:13,755 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2022-11-21 16:36:13,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:13,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511987955] [2022-11-21 16:36:13,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:13,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:13,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:13,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:13,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-21 16:36:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:13,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:36:13,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:13,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 16:36:13,929 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 16:36:13,929 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-21 16:36:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:13,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:13,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:13,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511987955] [2022-11-21 16:36:13,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511987955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:13,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:13,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:36:13,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266501385] [2022-11-21 16:36:13,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:13,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:36:13,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:36:13,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:36:13,958 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:14,082 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-11-21 16:36:14,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:36:14,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-21 16:36:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:14,084 INFO L225 Difference]: With dead ends: 51 [2022-11-21 16:36:14,084 INFO L226 Difference]: Without dead ends: 51 [2022-11-21 16:36:14,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:36:14,086 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 27 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:14,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 40 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:36:14,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-21 16:36:14,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2022-11-21 16:36:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 43 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 57 transitions. [2022-11-21 16:36:14,093 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 57 transitions. Word has length 4 [2022-11-21 16:36:14,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:14,094 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 57 transitions. [2022-11-21 16:36:14,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:14,094 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 57 transitions. [2022-11-21 16:36:14,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 16:36:14,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:14,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 16:36:14,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:14,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:14,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash 925670, now seen corresponding path program 1 times [2022-11-21 16:36:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:14,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915720407] [2022-11-21 16:36:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:14,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:14,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:14,329 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:14,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-21 16:36:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:14,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:36:14,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:14,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 16:36:14,457 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 16:36:14,457 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-21 16:36:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:14,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:14,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:14,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915720407] [2022-11-21 16:36:14,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915720407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:14,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:14,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:36:14,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569663591] [2022-11-21 16:36:14,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:14,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:36:14,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:14,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:36:14,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:36:14,557 INFO L87 Difference]: Start difference. First operand 44 states and 57 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:14,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:14,706 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2022-11-21 16:36:14,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:36:14,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-21 16:36:14,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:14,710 INFO L225 Difference]: With dead ends: 58 [2022-11-21 16:36:14,710 INFO L226 Difference]: Without dead ends: 58 [2022-11-21 16:36:14,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:36:14,711 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 16 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:14,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 44 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:36:14,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-21 16:36:14,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 47. [2022-11-21 16:36:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 46 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2022-11-21 16:36:14,727 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 4 [2022-11-21 16:36:14,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:14,728 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2022-11-21 16:36:14,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:14,729 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2022-11-21 16:36:14,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 16:36:14,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:14,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 16:36:14,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:14,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:14,946 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:14,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:14,946 INFO L85 PathProgramCache]: Analyzing trace with hash 889567415, now seen corresponding path program 1 times [2022-11-21 16:36:14,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:14,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926907350] [2022-11-21 16:36:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:14,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:14,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:14,948 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:14,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-21 16:36:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:15,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:36:15,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:15,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-21 16:36:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:15,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:15,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:15,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926907350] [2022-11-21 16:36:15,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926907350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:15,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:15,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:36:15,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408509773] [2022-11-21 16:36:15,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:15,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:36:15,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:15,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:36:15,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:36:15,069 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:15,254 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2022-11-21 16:36:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:36:15,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 16:36:15,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:15,256 INFO L225 Difference]: With dead ends: 66 [2022-11-21 16:36:15,256 INFO L226 Difference]: Without dead ends: 66 [2022-11-21 16:36:15,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:36:15,258 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 23 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:15,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 87 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:36:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-21 16:36:15,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2022-11-21 16:36:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 46 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2022-11-21 16:36:15,264 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 6 [2022-11-21 16:36:15,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:15,265 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2022-11-21 16:36:15,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2022-11-21 16:36:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:36:15,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:15,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:15,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:15,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:15,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:15,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:15,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1806786797, now seen corresponding path program 1 times [2022-11-21 16:36:15,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:15,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779239267] [2022-11-21 16:36:15,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:15,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:15,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:15,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:15,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-21 16:36:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:15,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:36:15,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:15,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:15,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:15,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779239267] [2022-11-21 16:36:15,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779239267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:15,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:15,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:36:15,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137111877] [2022-11-21 16:36:15,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:15,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:36:15,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:15,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:36:15,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:36:15,588 INFO L87 Difference]: Start difference. First operand 47 states and 60 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) [2022-11-21 16:36:15,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:15,802 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2022-11-21 16:36:15,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:36:15,803 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 [2022-11-21 16:36:15,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:15,803 INFO L225 Difference]: With dead ends: 68 [2022-11-21 16:36:15,804 INFO L226 Difference]: Without dead ends: 68 [2022-11-21 16:36:15,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:36:15,805 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 64 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:15,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 53 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:36:15,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-21 16:36:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2022-11-21 16:36:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 49 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions. [2022-11-21 16:36:15,812 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 7 [2022-11-21 16:36:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:15,813 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions. [2022-11-21 16:36:15,813 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) [2022-11-21 16:36:15,813 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2022-11-21 16:36:15,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:36:15,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:15,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:15,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:16,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:16,026 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:16,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:16,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1806786798, now seen corresponding path program 1 times [2022-11-21 16:36:16,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:16,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414039758] [2022-11-21 16:36:16,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:16,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:16,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:16,029 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:16,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-21 16:36:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:16,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:36:16,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:16,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:16,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:16,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414039758] [2022-11-21 16:36:16,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414039758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:16,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:16,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:36:16,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430594494] [2022-11-21 16:36:16,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:16,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:36:16,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:16,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:36:16,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:36:16,194 INFO L87 Difference]: Start difference. First operand 50 states and 65 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2022-11-21 16:36:16,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:16,383 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2022-11-21 16:36:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:36:16,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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 [2022-11-21 16:36:16,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:16,385 INFO L225 Difference]: With dead ends: 61 [2022-11-21 16:36:16,385 INFO L226 Difference]: Without dead ends: 61 [2022-11-21 16:36:16,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:36:16,386 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 73 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:16,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 55 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:36:16,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-21 16:36:16,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2022-11-21 16:36:16,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.65) internal successors, (66), 50 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2022-11-21 16:36:16,391 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 7 [2022-11-21 16:36:16,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:16,392 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2022-11-21 16:36:16,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2022-11-21 16:36:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2022-11-21 16:36:16,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 16:36:16,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:16,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:16,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:16,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:16,594 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:16,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:16,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1454266352, now seen corresponding path program 1 times [2022-11-21 16:36:16,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:16,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299875200] [2022-11-21 16:36:16,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:16,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:16,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:16,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:16,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-21 16:36:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:16,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:36:16,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:16,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:36:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:16,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:16,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:16,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299875200] [2022-11-21 16:36:16,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299875200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:16,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:16,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:36:16,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117545546] [2022-11-21 16:36:16,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:16,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:36:16,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:16,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:36:16,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:36:16,705 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) 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) [2022-11-21 16:36:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:16,834 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2022-11-21 16:36:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:36:16,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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 [2022-11-21 16:36:16,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:16,840 INFO L225 Difference]: With dead ends: 66 [2022-11-21 16:36:16,840 INFO L226 Difference]: Without dead ends: 66 [2022-11-21 16:36:16,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:36:16,841 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 22 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:16,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 78 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:36:16,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-21 16:36:16,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-11-21 16:36:16,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 57 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-11-21 16:36:16,847 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 76 transitions. Word has length 10 [2022-11-21 16:36:16,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:16,847 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-21 16:36:16,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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) [2022-11-21 16:36:16,848 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 76 transitions. [2022-11-21 16:36:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 16:36:16,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:16,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:16,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:17,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:17,049 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:17,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:17,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2132584042, now seen corresponding path program 1 times [2022-11-21 16:36:17,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:17,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357941573] [2022-11-21 16:36:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:17,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:17,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:17,052 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:17,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-21 16:36:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:17,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:36:17,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:17,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-21 16:36:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:17,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:17,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:17,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357941573] [2022-11-21 16:36:17,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357941573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:17,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:17,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:36:17,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293047982] [2022-11-21 16:36:17,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:17,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:36:17,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:17,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:36:17,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:36:17,302 INFO L87 Difference]: Start difference. First operand 58 states and 76 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:17,533 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2022-11-21 16:36:17,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:36:17,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-21 16:36:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:17,535 INFO L225 Difference]: With dead ends: 65 [2022-11-21 16:36:17,535 INFO L226 Difference]: Without dead ends: 65 [2022-11-21 16:36:17,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:36:17,536 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 52 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:17,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 69 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:36:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-21 16:36:17,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2022-11-21 16:36:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 58 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:17,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2022-11-21 16:36:17,542 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 11 [2022-11-21 16:36:17,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:17,543 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2022-11-21 16:36:17,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2022-11-21 16:36:17,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 16:36:17,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:17,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:17,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:17,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:17,757 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:17,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1685595954, now seen corresponding path program 1 times [2022-11-21 16:36:17,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:17,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607435377] [2022-11-21 16:36:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:17,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:17,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:17,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:17,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-21 16:36:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:17,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:36:17,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:17,861 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-21 16:36:17,862 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 13 treesize of output 27 [2022-11-21 16:36:17,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-21 16:36:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:17,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:17,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:17,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607435377] [2022-11-21 16:36:17,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607435377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:17,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:17,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:36:17,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777490940] [2022-11-21 16:36:17,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:17,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:36:17,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:17,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:36:17,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:36:17,937 INFO L87 Difference]: Start difference. First operand 59 states and 77 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:18,107 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2022-11-21 16:36:18,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:36:18,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-11-21 16:36:18,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:18,108 INFO L225 Difference]: With dead ends: 64 [2022-11-21 16:36:18,108 INFO L226 Difference]: Without dead ends: 64 [2022-11-21 16:36:18,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:36:18,110 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:18,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:36:18,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-21 16:36:18,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2022-11-21 16:36:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 59 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2022-11-21 16:36:18,116 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 78 transitions. Word has length 12 [2022-11-21 16:36:18,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:18,116 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 78 transitions. [2022-11-21 16:36:18,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 78 transitions. [2022-11-21 16:36:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 16:36:18,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:18,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:18,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:18,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:18,318 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:18,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:18,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1602458348, now seen corresponding path program 1 times [2022-11-21 16:36:18,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:18,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891210539] [2022-11-21 16:36:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:18,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:18,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:18,320 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:18,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-21 16:36:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:18,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:36:18,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:18,440 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-21 16:36:18,440 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-21 16:36:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:18,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:18,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:18,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891210539] [2022-11-21 16:36:18,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891210539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:18,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:18,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:36:18,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37871485] [2022-11-21 16:36:18,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:18,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:36:18,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:36:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:36:18,476 INFO L87 Difference]: Start difference. First operand 60 states and 78 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:18,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:18,595 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2022-11-21 16:36:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:36:18,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-11-21 16:36:18,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:18,597 INFO L225 Difference]: With dead ends: 62 [2022-11-21 16:36:18,597 INFO L226 Difference]: Without dead ends: 62 [2022-11-21 16:36:18,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:36:18,598 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 43 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:18,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 44 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:36:18,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-21 16:36:18,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2022-11-21 16:36:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 49 states have (on average 1.530612244897959) internal successors, (75), 58 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2022-11-21 16:36:18,603 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 12 [2022-11-21 16:36:18,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:18,603 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2022-11-21 16:36:18,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2022-11-21 16:36:18,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 16:36:18,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:18,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:18,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:18,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:18,814 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:18,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:18,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1602458347, now seen corresponding path program 1 times [2022-11-21 16:36:18,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:18,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305743471] [2022-11-21 16:36:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:18,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:18,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:18,816 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:18,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-21 16:36:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:18,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:36:18,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:18,974 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-21 16:36:19,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:19,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:19,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:19,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305743471] [2022-11-21 16:36:19,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305743471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:19,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:19,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:36:19,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840688556] [2022-11-21 16:36:19,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:19,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:36:19,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:19,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:36:19,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:36:19,051 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:19,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:19,302 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2022-11-21 16:36:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:36:19,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 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 12 [2022-11-21 16:36:19,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:19,304 INFO L225 Difference]: With dead ends: 90 [2022-11-21 16:36:19,304 INFO L226 Difference]: Without dead ends: 90 [2022-11-21 16:36:19,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:36:19,305 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 73 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:19,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 79 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:36:19,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-21 16:36:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2022-11-21 16:36:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 53 states have (on average 1.509433962264151) internal successors, (80), 62 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2022-11-21 16:36:19,311 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 12 [2022-11-21 16:36:19,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:19,311 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2022-11-21 16:36:19,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2022-11-21 16:36:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 16:36:19,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:19,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:19,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:19,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:19,513 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash 713867117, now seen corresponding path program 1 times [2022-11-21 16:36:19,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:19,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567150487] [2022-11-21 16:36:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:19,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:19,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:19,515 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:19,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-21 16:36:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:19,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:36:19,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:19,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:19,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:19,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567150487] [2022-11-21 16:36:19,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567150487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:19,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:19,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:36:19,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615417662] [2022-11-21 16:36:19,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:19,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:36:19,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:19,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:36:19,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:36:19,661 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:19,702 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2022-11-21 16:36:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:36:19,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-21 16:36:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:19,704 INFO L225 Difference]: With dead ends: 60 [2022-11-21 16:36:19,704 INFO L226 Difference]: Without dead ends: 60 [2022-11-21 16:36:19,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:36:19,705 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 29 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:19,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 53 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:36:19,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-21 16:36:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-21 16:36:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.52) internal successors, (76), 59 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2022-11-21 16:36:19,709 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 13 [2022-11-21 16:36:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:19,709 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2022-11-21 16:36:19,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2022-11-21 16:36:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 16:36:19,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:19,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:19,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:19,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:19,924 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:19,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:19,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1863398776, now seen corresponding path program 1 times [2022-11-21 16:36:19,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:19,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447842669] [2022-11-21 16:36:19,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:19,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:19,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:19,926 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:19,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-21 16:36:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:20,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 16:36:20,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:20,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-11-21 16:36:20,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-21 16:36:20,254 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2022-11-21 16:36:20,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2022-11-21 16:36:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:20,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:20,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:20,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447842669] [2022-11-21 16:36:20,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447842669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:20,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:20,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:36:20,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420705400] [2022-11-21 16:36:20,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:20,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:36:20,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:20,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:36:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:36:20,433 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:21,426 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2022-11-21 16:36:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:36:21,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-21 16:36:21,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:21,428 INFO L225 Difference]: With dead ends: 122 [2022-11-21 16:36:21,428 INFO L226 Difference]: Without dead ends: 122 [2022-11-21 16:36:21,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:36:21,429 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 133 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:21,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 126 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 16:36:21,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-21 16:36:21,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 60. [2022-11-21 16:36:21,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.52) internal successors, (76), 59 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2022-11-21 16:36:21,434 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 13 [2022-11-21 16:36:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:21,435 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2022-11-21 16:36:21,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:21,435 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2022-11-21 16:36:21,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 16:36:21,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:21,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:21,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:21,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:21,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:21,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:21,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1863398777, now seen corresponding path program 1 times [2022-11-21 16:36:21,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:21,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102422586] [2022-11-21 16:36:21,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:21,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:21,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:21,639 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:21,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-21 16:36:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:21,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 16:36:21,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:21,950 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 16:36:21,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 16:36:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:22,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:22,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:22,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102422586] [2022-11-21 16:36:22,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102422586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:22,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:22,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:36:22,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129406242] [2022-11-21 16:36:22,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:22,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:36:22,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:22,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:36:22,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:36:22,060 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:22,652 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2022-11-21 16:36:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:36:22,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-21 16:36:22,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:22,653 INFO L225 Difference]: With dead ends: 85 [2022-11-21 16:36:22,653 INFO L226 Difference]: Without dead ends: 85 [2022-11-21 16:36:22,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:36:22,654 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 152 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:22,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 83 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:36:22,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-21 16:36:22,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 72. [2022-11-21 16:36:22,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 62 states have (on average 1.4516129032258065) internal successors, (90), 71 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2022-11-21 16:36:22,658 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 13 [2022-11-21 16:36:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:22,659 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2022-11-21 16:36:22,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2022-11-21 16:36:22,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 16:36:22,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:22,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:22,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:22,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:22,861 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:22,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:22,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1863406910, now seen corresponding path program 1 times [2022-11-21 16:36:22,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:22,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463545689] [2022-11-21 16:36:22,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:22,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:22,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:22,863 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:22,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-21 16:36:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:22,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:36:22,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:22,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:36:22,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:22,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463545689] [2022-11-21 16:36:22,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463545689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:22,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:22,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:36:22,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392902656] [2022-11-21 16:36:22,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:22,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:36:22,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:36:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:36:22,984 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:23,032 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2022-11-21 16:36:23,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:36:23,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-21 16:36:23,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:23,034 INFO L225 Difference]: With dead ends: 67 [2022-11-21 16:36:23,034 INFO L226 Difference]: Without dead ends: 67 [2022-11-21 16:36:23,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:36:23,035 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 48 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:23,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 47 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:36:23,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-21 16:36:23,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-21 16:36:23,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:23,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2022-11-21 16:36:23,038 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 13 [2022-11-21 16:36:23,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:23,039 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2022-11-21 16:36:23,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:23,039 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2022-11-21 16:36:23,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 16:36:23,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:23,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:23,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:23,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:23,251 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:23,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:23,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1879468086, now seen corresponding path program 1 times [2022-11-21 16:36:23,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:23,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540493661] [2022-11-21 16:36:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:23,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:23,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:23,253 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:23,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-21 16:36:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:23,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:36:23,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:23,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:36:23,460 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-21 16:36:23,460 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 15 [2022-11-21 16:36:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:23,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:23,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540493661] [2022-11-21 16:36:23,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540493661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:36:23,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:36:23,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2022-11-21 16:36:23,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977374110] [2022-11-21 16:36:23,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:36:23,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:36:23,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:23,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:36:23,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:36:23,488 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:23,600 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2022-11-21 16:36:23,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:36:23,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-21 16:36:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:23,603 INFO L225 Difference]: With dead ends: 68 [2022-11-21 16:36:23,604 INFO L226 Difference]: Without dead ends: 68 [2022-11-21 16:36:23,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:36:23,605 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 34 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:23,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 25 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:36:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-21 16:36:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 46. [2022-11-21 16:36:23,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 45 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-11-21 16:36:23,610 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 17 [2022-11-21 16:36:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:23,610 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-11-21 16:36:23,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-11-21 16:36:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-21 16:36:23,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:23,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:23,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:23,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:23,822 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:23,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:23,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1866031452, now seen corresponding path program 1 times [2022-11-21 16:36:23,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:23,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046941215] [2022-11-21 16:36:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:23,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:23,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:23,824 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:23,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-21 16:36:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:23,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 16:36:23,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:24,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 16:36:24,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:36:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:24,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:36:24,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-21 16:36:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:24,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:24,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046941215] [2022-11-21 16:36:24,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046941215] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:36:24,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:36:24,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-21 16:36:24,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78087061] [2022-11-21 16:36:24,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:36:24,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:36:24,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:24,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:36:24,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:36:24,224 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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) [2022-11-21 16:36:24,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:24,522 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-11-21 16:36:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:36:24,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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 [2022-11-21 16:36:24,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:24,524 INFO L225 Difference]: With dead ends: 49 [2022-11-21 16:36:24,524 INFO L226 Difference]: Without dead ends: 49 [2022-11-21 16:36:24,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:36:24,525 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 59 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:24,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 40 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:36:24,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-21 16:36:24,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2022-11-21 16:36:24,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 44 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:24,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2022-11-21 16:36:24,527 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 18 [2022-11-21 16:36:24,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:24,528 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2022-11-21 16:36:24,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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) [2022-11-21 16:36:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2022-11-21 16:36:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 16:36:24,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:24,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:24,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:24,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:24,740 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:24,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2012400074, now seen corresponding path program 1 times [2022-11-21 16:36:24,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:24,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205050984] [2022-11-21 16:36:24,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:24,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:24,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:24,742 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:24,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-21 16:36:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:24,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 16:36:24,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:24,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-21 16:36:25,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 16:36:25,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:36:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:25,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:36:25,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-21 16:36:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:25,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:25,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205050984] [2022-11-21 16:36:25,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205050984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:36:25,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:36:25,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2022-11-21 16:36:25,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313652189] [2022-11-21 16:36:25,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:36:25,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 16:36:25,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:25,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 16:36:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:36:25,620 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:26,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:26,524 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2022-11-21 16:36:26,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:36:26,525 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 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 19 [2022-11-21 16:36:26,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:26,526 INFO L225 Difference]: With dead ends: 48 [2022-11-21 16:36:26,526 INFO L226 Difference]: Without dead ends: 48 [2022-11-21 16:36:26,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:36:26,527 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 99 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:26,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 39 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 16:36:26,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-21 16:36:26,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2022-11-21 16:36:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-11-21 16:36:26,530 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 19 [2022-11-21 16:36:26,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:26,530 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-11-21 16:36:26,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:26,531 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-11-21 16:36:26,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 16:36:26,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:26,531 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] [2022-11-21 16:36:26,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:26,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:26,732 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:26,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:26,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2040107238, now seen corresponding path program 1 times [2022-11-21 16:36:26,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:26,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675486073] [2022-11-21 16:36:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:26,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:26,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:26,735 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:26,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-21 16:36:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:26,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:36:26,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:26,948 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-21 16:36:26,948 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-21 16:36:27,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 16:36:27,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-21 16:36:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:27,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:36:27,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-11-21 16:36:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:27,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:27,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675486073] [2022-11-21 16:36:27,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675486073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:36:27,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:36:27,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-21 16:36:27,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782362907] [2022-11-21 16:36:27,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:36:27,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:36:27,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:27,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:36:27,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:36:27,323 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:27,751 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2022-11-21 16:36:27,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:36:27,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 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 [2022-11-21 16:36:27,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:27,753 INFO L225 Difference]: With dead ends: 47 [2022-11-21 16:36:27,753 INFO L226 Difference]: Without dead ends: 47 [2022-11-21 16:36:27,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:36:27,754 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 61 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:27,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 25 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:36:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-21 16:36:27,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2022-11-21 16:36:27,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2022-11-21 16:36:27,757 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 20 [2022-11-21 16:36:27,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:27,757 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-11-21 16:36:27,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-11-21 16:36:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 16:36:27,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:27,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:27,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:27,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:27,972 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:27,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:27,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1247947063, now seen corresponding path program 1 times [2022-11-21 16:36:27,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:27,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725813642] [2022-11-21 16:36:27,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:27,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:27,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:27,973 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:27,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-21 16:36:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:28,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:36:28,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:28,186 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-21 16:36:28,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:28,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:36:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:28,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:28,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725813642] [2022-11-21 16:36:28,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725813642] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:36:28,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:36:28,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-21 16:36:28,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579783552] [2022-11-21 16:36:28,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:36:28,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 16:36:28,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:28,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 16:36:28,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:36:28,764 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:31,101 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2022-11-21 16:36:31,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 16:36:31,103 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 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 [2022-11-21 16:36:31,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:31,104 INFO L225 Difference]: With dead ends: 142 [2022-11-21 16:36:31,104 INFO L226 Difference]: Without dead ends: 142 [2022-11-21 16:36:31,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2022-11-21 16:36:31,115 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 437 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:31,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 103 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 16:36:31,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-21 16:36:31,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 87. [2022-11-21 16:36:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 81 states have (on average 1.3703703703703705) internal successors, (111), 86 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2022-11-21 16:36:31,119 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 111 transitions. Word has length 20 [2022-11-21 16:36:31,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:31,120 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 111 transitions. [2022-11-21 16:36:31,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:31,120 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2022-11-21 16:36:31,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 16:36:31,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:31,121 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] [2022-11-21 16:36:31,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:31,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:31,331 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:36:31,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:31,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1181184967, now seen corresponding path program 1 times [2022-11-21 16:36:31,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:31,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954768775] [2022-11-21 16:36:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:31,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:31,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:31,334 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:31,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-21 16:36:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:31,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 16:36:31,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:31,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-21 16:36:32,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 16:36:36,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2022-11-21 16:36:36,441 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~mem8#1.base_11| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_realloc_ptr#1.base| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#a~0#1.base_14| (_ BitVec 32))) (let ((.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#a~0#1.base_14| (_ bv1 1)))) (let ((.cse0 (store .cse1 |ULTIMATE.start_#Ultimate.C_realloc_ptr#1.base| (_ bv0 1)))) (and (= (select .cse0 |v_ULTIMATE.start_main_#t~mem8#1.base_11|) (_ bv0 1)) (= (store (store .cse0 |v_ULTIMATE.start_main_#t~mem8#1.base_11| (_ bv0 1)) |v_ULTIMATE.start_main_~#a~0#1.base_14| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#a~0#1.base_14|) (_ bv0 1)) (= (select .cse1 |ULTIMATE.start_#Ultimate.C_realloc_ptr#1.base|) (_ bv0 1)))))) is different from true [2022-11-21 16:36:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:36,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:36:36,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-11-21 16:36:44,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-11-21 16:36:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:50,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:50,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954768775] [2022-11-21 16:36:50,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954768775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:36:50,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:36:50,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2022-11-21 16:36:50,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335361484] [2022-11-21 16:36:50,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:36:50,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:36:50,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:50,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:36:50,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=289, Unknown=7, NotChecked=34, Total=380 [2022-11-21 16:36:50,932 INFO L87 Difference]: Start difference. First operand 87 states and 111 transitions. Second operand has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:52,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:36:55,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:36:57,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:36:59,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:37:01,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:37:05,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:37:23,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:37:23,481 INFO L93 Difference]: Finished difference Result 144 states and 183 transitions. [2022-11-21 16:37:23,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:37:23,483 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 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 21 [2022-11-21 16:37:23,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:37:23,484 INFO L225 Difference]: With dead ends: 144 [2022-11-21 16:37:23,484 INFO L226 Difference]: Without dead ends: 137 [2022-11-21 16:37:23,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 37.2s TimeCoverageRelationStatistics Valid=137, Invalid=558, Unknown=11, NotChecked=50, Total=756 [2022-11-21 16:37:23,485 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 73 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:37:23,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 85 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 268 Invalid, 6 Unknown, 44 Unchecked, 13.7s Time] [2022-11-21 16:37:23,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-21 16:37:23,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2022-11-21 16:37:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 127 states have (on average 1.3779527559055118) internal successors, (175), 132 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 175 transitions. [2022-11-21 16:37:23,490 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 175 transitions. Word has length 21 [2022-11-21 16:37:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:37:23,491 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 175 transitions. [2022-11-21 16:37:23,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:23,491 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 175 transitions. [2022-11-21 16:37:23,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 16:37:23,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:37:23,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:23,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-21 16:37:23,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:23,706 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:37:23,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:23,706 INFO L85 PathProgramCache]: Analyzing trace with hash -31653307, now seen corresponding path program 1 times [2022-11-21 16:37:23,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:37:23,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104468970] [2022-11-21 16:37:23,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:23,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:23,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:37:23,708 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:37:23,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-21 16:37:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:23,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 16:37:23,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:37:23,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 16:37:24,083 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 16:37:24,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 16:37:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:24,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:37:25,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2022-11-21 16:37:25,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-21 16:37:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:25,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:37:25,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104468970] [2022-11-21 16:37:25,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104468970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:37:25,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:37:25,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-21 16:37:25,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063373106] [2022-11-21 16:37:25,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:37:25,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:37:25,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:37:25,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:37:25,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:37:25,686 INFO L87 Difference]: Start difference. First operand 133 states and 175 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:37:31,828 INFO L93 Difference]: Finished difference Result 198 states and 218 transitions. [2022-11-21 16:37:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 16:37:31,830 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 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 21 [2022-11-21 16:37:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:37:31,831 INFO L225 Difference]: With dead ends: 198 [2022-11-21 16:37:31,831 INFO L226 Difference]: Without dead ends: 198 [2022-11-21 16:37:31,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=341, Invalid=991, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 16:37:31,832 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 531 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:37:31,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 120 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-21 16:37:31,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-21 16:37:31,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 135. [2022-11-21 16:37:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.2461538461538462) internal successors, (162), 134 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 162 transitions. [2022-11-21 16:37:31,838 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 162 transitions. Word has length 21 [2022-11-21 16:37:31,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:37:31,839 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 162 transitions. [2022-11-21 16:37:31,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:31,840 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 162 transitions. [2022-11-21 16:37:31,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 16:37:31,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:37:31,841 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] [2022-11-21 16:37:31,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-21 16:37:32,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:32,046 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:37:32,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:32,047 INFO L85 PathProgramCache]: Analyzing trace with hash -594378953, now seen corresponding path program 1 times [2022-11-21 16:37:32,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:37:32,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787508631] [2022-11-21 16:37:32,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:32,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:32,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:37:32,048 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:37:32,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-21 16:37:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:32,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:37:32,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:37:32,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-21 16:37:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:32,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:37:32,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:37:32,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787508631] [2022-11-21 16:37:32,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787508631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:37:32,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:37:32,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:37:32,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244117449] [2022-11-21 16:37:32,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:37:32,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:37:32,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:37:32,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:37:32,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:37:32,203 INFO L87 Difference]: Start difference. First operand 135 states and 162 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:32,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:37:32,379 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2022-11-21 16:37:32,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:37:32,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2022-11-21 16:37:32,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:37:32,382 INFO L225 Difference]: With dead ends: 120 [2022-11-21 16:37:32,382 INFO L226 Difference]: Without dead ends: 120 [2022-11-21 16:37:32,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:37:32,383 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:37:32,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 97 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:37:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-21 16:37:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-11-21 16:37:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.2434782608695651) internal successors, (143), 119 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:32,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2022-11-21 16:37:32,388 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 21 [2022-11-21 16:37:32,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:37:32,388 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2022-11-21 16:37:32,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2022-11-21 16:37:32,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 16:37:32,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:37:32,390 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:32,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-21 16:37:32,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:32,597 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:37:32,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:32,598 INFO L85 PathProgramCache]: Analyzing trace with hash -947458301, now seen corresponding path program 1 times [2022-11-21 16:37:32,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:37:32,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832730280] [2022-11-21 16:37:32,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:32,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:32,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:37:32,599 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:37:32,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-21 16:37:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:32,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:37:32,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:37:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 16:37:32,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:37:33,051 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:37:33,052 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 26 [2022-11-21 16:37:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 16:37:33,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:37:33,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832730280] [2022-11-21 16:37:33,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832730280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:37:33,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:37:33,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-21 16:37:33,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813327749] [2022-11-21 16:37:33,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:37:33,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:37:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:37:33,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:37:33,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:37:33,505 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 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) [2022-11-21 16:37:33,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:37:33,632 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2022-11-21 16:37:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:37:33,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 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) Word has length 25 [2022-11-21 16:37:33,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:37:33,634 INFO L225 Difference]: With dead ends: 119 [2022-11-21 16:37:33,634 INFO L226 Difference]: Without dead ends: 116 [2022-11-21 16:37:33,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:37:33,635 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 45 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:37:33,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 25 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:37:33,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-21 16:37:33,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-11-21 16:37:33,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 115 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:33,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2022-11-21 16:37:33,639 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 25 [2022-11-21 16:37:33,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:37:33,639 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2022-11-21 16:37:33,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 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) [2022-11-21 16:37:33,639 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2022-11-21 16:37:33,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 16:37:33,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:37:33,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:33,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-21 16:37:33,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:33,843 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:37:33,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:33,843 INFO L85 PathProgramCache]: Analyzing trace with hash -543506429, now seen corresponding path program 1 times [2022-11-21 16:37:33,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:37:33,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120000250] [2022-11-21 16:37:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:33,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:33,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:37:33,845 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:37:33,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-21 16:37:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:33,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:37:33,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:37:34,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 16:37:34,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-21 16:37:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:34,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:37:34,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:37:34,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120000250] [2022-11-21 16:37:34,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120000250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:37:34,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:37:34,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:37:34,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808297618] [2022-11-21 16:37:34,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:37:34,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:37:34,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:37:34,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:37:34,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:37:34,070 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:34,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:37:34,408 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2022-11-21 16:37:34,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:37:34,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 29 [2022-11-21 16:37:34,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:37:34,410 INFO L225 Difference]: With dead ends: 55 [2022-11-21 16:37:34,410 INFO L226 Difference]: Without dead ends: 55 [2022-11-21 16:37:34,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:37:34,423 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:37:34,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 48 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:37:34,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-21 16:37:34,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-21 16:37:34,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2022-11-21 16:37:34,429 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 29 [2022-11-21 16:37:34,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:37:34,430 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2022-11-21 16:37:34,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:34,430 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2022-11-21 16:37:34,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-21 16:37:34,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:37:34,431 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:34,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-21 16:37:34,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:34,632 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:37:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1902250599, now seen corresponding path program 2 times [2022-11-21 16:37:34,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:37:34,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123808823] [2022-11-21 16:37:34,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:37:34,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:34,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:37:34,634 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:37:34,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-21 16:37:34,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:37:34,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:37:34,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 16:37:34,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:37:35,167 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-21 16:37:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:35,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:37:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:36,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:37:36,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123808823] [2022-11-21 16:37:36,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123808823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:37:36,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:37:36,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-21 16:37:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034416407] [2022-11-21 16:37:36,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:37:36,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:37:36,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:37:36,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:37:36,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:37:36,700 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand has 22 states, 21 states have (on average 4.761904761904762) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:37:46,559 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2022-11-21 16:37:46,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-21 16:37:46,560 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.761904761904762) internal successors, (100), 22 states have internal predecessors, (100), 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 52 [2022-11-21 16:37:46,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:37:46,561 INFO L225 Difference]: With dead ends: 128 [2022-11-21 16:37:46,561 INFO L226 Difference]: Without dead ends: 128 [2022-11-21 16:37:46,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1141, Invalid=3019, Unknown=0, NotChecked=0, Total=4160 [2022-11-21 16:37:46,562 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 338 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:37:46,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 76 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 16:37:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-21 16:37:46,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 118. [2022-11-21 16:37:46,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 116 states have (on average 1.0775862068965518) internal successors, (125), 117 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2022-11-21 16:37:46,566 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 52 [2022-11-21 16:37:46,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:37:46,567 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2022-11-21 16:37:46,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.761904761904762) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2022-11-21 16:37:46,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-21 16:37:46,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:37:46,568 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:46,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-21 16:37:46,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:46,778 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:37:46,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:46,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1159773557, now seen corresponding path program 2 times [2022-11-21 16:37:46,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:37:46,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141093634] [2022-11-21 16:37:46,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:37:46,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:46,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:37:46,780 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:37:46,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-21 16:37:46,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:37:46,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:37:46,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:37:46,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:37:47,145 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-21 16:37:47,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-21 16:37:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-21 16:37:47,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:37:47,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:37:47,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141093634] [2022-11-21 16:37:47,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141093634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:37:47,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:37:47,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:37:47,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482443685] [2022-11-21 16:37:47,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:37:47,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:37:47,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:37:47,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:37:47,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:37:47,548 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-21 16:37:48,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:37:48,725 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2022-11-21 16:37:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:37:48,727 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 53 [2022-11-21 16:37:48,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:37:48,728 INFO L225 Difference]: With dead ends: 117 [2022-11-21 16:37:48,728 INFO L226 Difference]: Without dead ends: 117 [2022-11-21 16:37:48,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:37:48,729 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 26 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:37:48,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 12 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:37:48,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-21 16:37:48,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-11-21 16:37:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.0086206896551724) internal successors, (117), 116 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:48,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2022-11-21 16:37:48,733 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 53 [2022-11-21 16:37:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:37:48,733 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2022-11-21 16:37:48,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-21 16:37:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2022-11-21 16:37:48,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-21 16:37:48,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:37:48,735 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:48,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-21 16:37:48,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:48,942 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:37:48,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:48,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1670411065, now seen corresponding path program 3 times [2022-11-21 16:37:48,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:37:48,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948032700] [2022-11-21 16:37:48,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:37:48,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:48,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:37:48,945 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:37:48,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-21 16:37:51,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-11-21 16:37:51,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:37:51,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 16:37:51,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:37:51,831 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-21 16:37:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:51,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:37:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:55,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:37:55,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948032700] [2022-11-21 16:37:55,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948032700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:37:55,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:37:55,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2022-11-21 16:37:55,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795198314] [2022-11-21 16:37:55,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:37:55,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-21 16:37:55,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:37:55,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-21 16:37:55,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1057, Unknown=0, NotChecked=0, Total=1406 [2022-11-21 16:37:55,654 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand has 38 states, 37 states have (on average 6.162162162162162) internal successors, (228), 38 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:36,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:38:36,777 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2022-11-21 16:38:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-11-21 16:38:36,779 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 6.162162162162162) internal successors, (228), 38 states have internal predecessors, (228), 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 116 [2022-11-21 16:38:36,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:38:36,780 INFO L225 Difference]: With dead ends: 247 [2022-11-21 16:38:36,780 INFO L226 Difference]: Without dead ends: 247 [2022-11-21 16:38:36,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6911 ImplicationChecksByTransitivity, 37.5s TimeCoverageRelationStatistics Valid=4965, Invalid=13667, Unknown=0, NotChecked=0, Total=18632 [2022-11-21 16:38:36,785 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 626 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:38:36,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 305 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-21 16:38:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-21 16:38:36,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2022-11-21 16:38:36,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.0040983606557377) internal successors, (245), 244 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2022-11-21 16:38:36,791 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 116 [2022-11-21 16:38:36,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:38:36,791 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2022-11-21 16:38:36,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 6.162162162162162) internal successors, (228), 38 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:36,792 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2022-11-21 16:38:36,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-21 16:38:36,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:38:36,795 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 29, 29, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:36,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-21 16:38:37,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:38:37,010 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:38:37,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:37,011 INFO L85 PathProgramCache]: Analyzing trace with hash 87977593, now seen corresponding path program 4 times [2022-11-21 16:38:37,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:38:37,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237199243] [2022-11-21 16:38:37,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:38:37,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:38:37,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:38:37,013 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:38:37,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-21 16:38:39,071 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:38:39,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:38:39,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-21 16:38:39,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:38:40,244 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-21 16:38:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3451 backedges. 0 proven. 3451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:40,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:38:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3451 backedges. 0 proven. 3451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:52,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:38:52,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237199243] [2022-11-21 16:38:52,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237199243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:38:52,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:38:52,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 69 [2022-11-21 16:38:52,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280295766] [2022-11-21 16:38:52,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:38:52,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-21 16:38:52,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:38:52,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-21 16:38:52,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1197, Invalid=3633, Unknown=0, NotChecked=0, Total=4830 [2022-11-21 16:38:52,444 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand has 70 states, 69 states have (on average 7.0144927536231885) internal successors, (484), 70 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:37,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:37,649 INFO L93 Difference]: Finished difference Result 503 states and 503 transitions. [2022-11-21 16:42:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2022-11-21 16:42:37,651 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 7.0144927536231885) internal successors, (484), 70 states have internal predecessors, (484), 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 244 [2022-11-21 16:42:37,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:37,653 INFO L225 Difference]: With dead ends: 503 [2022-11-21 16:42:37,653 INFO L226 Difference]: Without dead ends: 503 [2022-11-21 16:42:37,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30871 ImplicationChecksByTransitivity, 211.6s TimeCoverageRelationStatistics Valid=20677, Invalid=58003, Unknown=0, NotChecked=0, Total=78680 [2022-11-21 16:42:37,665 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1318 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 7636 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 7716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 7636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:42:37,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 1049 Invalid, 7716 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 7636 Invalid, 0 Unknown, 0 Unchecked, 24.2s Time] [2022-11-21 16:42:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-21 16:42:37,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501. [2022-11-21 16:42:37,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.002) internal successors, (501), 500 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:37,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 501 transitions. [2022-11-21 16:42:37,678 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 501 transitions. Word has length 244 [2022-11-21 16:42:37,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:37,678 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 501 transitions. [2022-11-21 16:42:37,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 7.0144927536231885) internal successors, (484), 70 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:37,679 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 501 transitions. [2022-11-21 16:42:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-11-21 16:42:37,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:37,689 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 62, 62, 61, 61, 1, 1, 1, 1, 1, 1] [2022-11-21 16:42:37,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-21 16:42:37,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:42:37,917 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-21 16:42:37,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:37,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2017565447, now seen corresponding path program 5 times [2022-11-21 16:42:37,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:42:37,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608204886] [2022-11-21 16:42:37,919 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 16:42:37,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:42:37,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:42:37,921 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:42:37,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ada8b1-1e50-4dc7-9ea1-afffb46c204f/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process