./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8 --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 71daa4447a811360729951159d42c752715aafb50c3ad4dcb2ed5d242a4f4a78 --- 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-2329fc7 [2022-12-13 17:50:41,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:50:41,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:50:41,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:50:41,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:50:41,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:50:41,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:50:41,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:50:41,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:50:41,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:50:41,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:50:41,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:50:41,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:50:41,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:50:41,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:50:41,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:50:41,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:50:41,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:50:41,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:50:41,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:50:41,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:50:41,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:50:41,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:50:41,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:50:41,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:50:41,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:50:41,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:50:41,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:50:41,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:50:41,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:50:41,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:50:41,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:50:41,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:50:41,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:50:41,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:50:41,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:50:41,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:50:41,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:50:41,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:50:41,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:50:41,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:50:41,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 17:50:41,373 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:50:41,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:50:41,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:50:41,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:50:41,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:50:41,375 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:50:41,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:50:41,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:50:41,376 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:50:41,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:50:41,376 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:50:41,376 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:50:41,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:50:41,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:50:41,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:50:41,377 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 17:50:41,377 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 17:50:41,377 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 17:50:41,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:50:41,378 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 17:50:41,378 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:50:41,378 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:50:41,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:50:41,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:50:41,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:50:41,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:50:41,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:50:41,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:50:41,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:50:41,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:50:41,380 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:50:41,380 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:50:41,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:50:41,380 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:50:41,381 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71daa4447a811360729951159d42c752715aafb50c3ad4dcb2ed5d242a4f4a78 [2022-12-13 17:50:41,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:50:41,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:50:41,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:50:41,580 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:50:41,580 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:50:41,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i [2022-12-13 17:50:44,127 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:50:44,285 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:50:44,285 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i [2022-12-13 17:50:44,292 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/data/8a2589306/ad0d8800124d417aaa53f1e2d6d36349/FLAGfcefe2508 [2022-12-13 17:50:44,681 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/data/8a2589306/ad0d8800124d417aaa53f1e2d6d36349 [2022-12-13 17:50:44,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:50:44,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:50:44,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:50:44,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:50:44,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:50:44,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:50:44" (1/1) ... [2022-12-13 17:50:44,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ecfd64e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:44, skipping insertion in model container [2022-12-13 17:50:44,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:50:44" (1/1) ... [2022-12-13 17:50:44,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:50:44,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:50:44,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:50:44,982 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) [2022-12-13 17:50:44,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@523ecdd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:44, skipping insertion in model container [2022-12-13 17:50:44,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:50:44,983 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 17:50:44,985 INFO L158 Benchmark]: Toolchain (without parser) took 299.45ms. Allocated memory is still 148.9MB. Free memory was 102.1MB in the beginning and 90.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 17:50:44,985 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 104.9MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:50:44,986 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.51ms. Allocated memory is still 148.9MB. Free memory was 101.5MB in the beginning and 90.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 17:50:44,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 104.9MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.51ms. Allocated memory is still 148.9MB. Free memory was 101.5MB in the beginning and 90.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 530]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8 --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 71daa4447a811360729951159d42c752715aafb50c3ad4dcb2ed5d242a4f4a78 --- 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-2329fc7 [2022-12-13 17:50:46,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:50:46,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:50:46,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:50:46,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:50:46,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:50:46,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:50:46,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:50:46,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:50:46,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:50:46,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:50:46,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:50:46,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:50:46,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:50:46,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:50:46,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:50:46,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:50:46,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:50:46,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:50:46,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:50:46,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:50:46,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:50:46,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:50:46,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:50:46,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:50:46,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:50:46,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:50:46,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:50:46,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:50:46,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:50:46,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:50:46,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:50:46,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:50:46,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:50:46,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:50:46,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:50:46,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:50:46,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:50:46,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:50:46,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:50:46,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:50:46,669 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 17:50:46,684 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:50:46,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:50:46,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:50:46,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:50:46,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:50:46,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:50:46,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:50:46,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:50:46,686 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:50:46,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:50:46,686 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:50:46,686 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:50:46,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:50:46,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:50:46,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:50:46,687 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 17:50:46,687 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 17:50:46,687 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 17:50:46,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:50:46,687 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 17:50:46,687 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 17:50:46,688 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 17:50:46,688 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:50:46,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:50:46,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:50:46,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:50:46,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:50:46,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:50:46,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:50:46,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:50:46,689 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 17:50:46,693 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 17:50:46,693 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:50:46,694 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:50:46,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:50:46,694 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 17:50:46,694 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:50:46,694 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71daa4447a811360729951159d42c752715aafb50c3ad4dcb2ed5d242a4f4a78 [2022-12-13 17:50:46,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:50:46,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:50:46,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:50:46,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:50:46,957 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:50:46,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i [2022-12-13 17:50:49,567 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:50:49,767 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:50:49,767 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i [2022-12-13 17:50:49,778 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/data/8d7197979/336408f71f22489f8ba62564658fa7c2/FLAG40514f907 [2022-12-13 17:50:49,789 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/data/8d7197979/336408f71f22489f8ba62564658fa7c2 [2022-12-13 17:50:49,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:50:49,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:50:49,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:50:49,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:50:49,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:50:49,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:50:49" (1/1) ... [2022-12-13 17:50:49,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139c63d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:49, skipping insertion in model container [2022-12-13 17:50:49,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:50:49" (1/1) ... [2022-12-13 17:50:49,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:50:49,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:50:50,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:50:50,088 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 17:50:50,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:50:50,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:50:50,134 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:50:50,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:50:50,191 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:50:50,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:50 WrapperNode [2022-12-13 17:50:50,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:50:50,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:50:50,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:50:50,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:50:50,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:50" (1/1) ... [2022-12-13 17:50:50,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:50" (1/1) ... [2022-12-13 17:50:50,233 INFO L138 Inliner]: procedures = 117, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-12-13 17:50:50,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:50:50,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:50:50,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:50:50,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:50:50,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:50" (1/1) ... [2022-12-13 17:50:50,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:50" (1/1) ... [2022-12-13 17:50:50,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:50" (1/1) ... [2022-12-13 17:50:50,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:50" (1/1) ... [2022-12-13 17:50:50,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:50" (1/1) ... [2022-12-13 17:50:50,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:50" (1/1) ... [2022-12-13 17:50:50,259 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:50" (1/1) ... [2022-12-13 17:50:50,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:50" (1/1) ... [2022-12-13 17:50:50,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:50:50,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:50:50,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:50:50,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:50:50,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:50" (1/1) ... [2022-12-13 17:50:50,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:50:50,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:50:50,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:50:50,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:50:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 17:50:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:50:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:50:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 17:50:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:50:50,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:50:50,401 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:50:50,403 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:50:50,668 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:50:50,673 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:50:50,674 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 17:50:50,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:50:50 BoogieIcfgContainer [2022-12-13 17:50:50,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:50:50,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:50:50,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:50:50,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:50:50,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:50:49" (1/3) ... [2022-12-13 17:50:50,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d19c597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:50:50, skipping insertion in model container [2022-12-13 17:50:50,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:50:50" (2/3) ... [2022-12-13 17:50:50,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d19c597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:50:50, skipping insertion in model container [2022-12-13 17:50:50,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:50:50" (3/3) ... [2022-12-13 17:50:50,684 INFO L112 eAbstractionObserver]: Analyzing ICFG bubblesort-alloca-2.i [2022-12-13 17:50:50,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:50:50,702 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-12-13 17:50:50,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:50:50,737 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=PETRI_NET, 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;@1195fd16, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:50:50,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 17:50:50,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.92) internal successors, (48), 40 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) [2022-12-13 17:50:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 17:50:50,744 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:50,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:50:50,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:50,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:50,750 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-12-13 17:50:50,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:50,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793179258] [2022-12-13 17:50:50,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:50,759 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 [2022-12-13 17:50:50,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:50,761 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:50,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:50,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:50:50,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:50,884 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 7 [2022-12-13 17:50:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:50:50,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:50:50,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:50,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793179258] [2022-12-13 17:50:50,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793179258] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:50:50,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:50:50,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:50:50,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664127200] [2022-12-13 17:50:50,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:50:50,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:50:50,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:50,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:50:50,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:50:50,926 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.92) internal successors, (48), 40 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) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:51,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:51,001 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-12-13 17:50:51,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:50:51,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-13 17:50:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:51,011 INFO L225 Difference]: With dead ends: 40 [2022-12-13 17:50:51,011 INFO L226 Difference]: Without dead ends: 38 [2022-12-13 17:50:51,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:50:51,016 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 34 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:51,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 31 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:50:51,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-13 17:50:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-12-13 17:50:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.75) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:51,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-12-13 17:50:51,044 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 6 [2022-12-13 17:50:51,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:50:51,044 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-12-13 17:50:51,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:51,045 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-12-13 17:50:51,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 17:50:51,045 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:51,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:50:51,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Forceful destruction successful, exit code 0 [2022-12-13 17:50:51,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:51,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:51,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:51,249 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2022-12-13 17:50:51,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:51,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623481166] [2022-12-13 17:50:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:51,252 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 [2022-12-13 17:50:51,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:51,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:51,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:51,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:50:51,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:51,365 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 [2022-12-13 17:50:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:50:51,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:50:51,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:51,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623481166] [2022-12-13 17:50:51,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623481166] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:50:51,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:50:51,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:50:51,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147078033] [2022-12-13 17:50:51,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:50:51,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:50:51,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:51,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:50:51,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:50:51,398 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2022-12-13 17:50:51,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:51,605 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2022-12-13 17:50:51,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:50:51,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) 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 [2022-12-13 17:50:51,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:51,607 INFO L225 Difference]: With dead ends: 77 [2022-12-13 17:50:51,607 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 17:50:51,607 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 [2022-12-13 17:50:51,608 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 44 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:51,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 145 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:50:51,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 17:50:51,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 41. [2022-12-13 17:50:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-12-13 17:50:51,612 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 6 [2022-12-13 17:50:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:50:51,612 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-12-13 17:50:51,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2022-12-13 17:50:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-12-13 17:50:51,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 17:50:51,613 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:51,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:50:51,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:50:51,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:51,815 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:51,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:51,816 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-12-13 17:50:51,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:51,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029665751] [2022-12-13 17:50:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:51,818 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 [2022-12-13 17:50:51,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:51,854 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:51,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:51,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:50:51,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:51,966 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 [2022-12-13 17:50:52,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:50:52,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:50:52,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:52,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029665751] [2022-12-13 17:50:52,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029665751] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:50:52,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:50:52,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:50:52,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134861781] [2022-12-13 17:50:52,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:50:52,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:50:52,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:52,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:50:52,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:50:52,024 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2022-12-13 17:50:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:52,191 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2022-12-13 17:50:52,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:50:52,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) 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 [2022-12-13 17:50:52,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:52,192 INFO L225 Difference]: With dead ends: 45 [2022-12-13 17:50:52,192 INFO L226 Difference]: Without dead ends: 45 [2022-12-13 17:50:52,193 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 [2022-12-13 17:50:52,194 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 44 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:52,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 59 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:50:52,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-13 17:50:52,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2022-12-13 17:50:52,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-12-13 17:50:52,199 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 6 [2022-12-13 17:50:52,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:50:52,199 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-12-13 17:50:52,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2022-12-13 17:50:52,199 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-12-13 17:50:52,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 17:50:52,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:52,200 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:50:52,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:50:52,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:52,402 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:52,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2022-12-13 17:50:52,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:52,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420772814] [2022-12-13 17:50:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:52,407 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 [2022-12-13 17:50:52,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:52,411 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:52,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:52,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:50:52,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:50:52,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:50:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:50:52,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:52,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420772814] [2022-12-13 17:50:52,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420772814] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:50:52,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:50:52,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 17:50:52,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158958877] [2022-12-13 17:50:52,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:50:52,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:50:52,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:52,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:50:52,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:50:52,600 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2022-12-13 17:50:52,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:52,662 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2022-12-13 17:50:52,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:50:52,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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 10 [2022-12-13 17:50:52,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:52,664 INFO L225 Difference]: With dead ends: 75 [2022-12-13 17:50:52,664 INFO L226 Difference]: Without dead ends: 75 [2022-12-13 17:50:52,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:50:52,665 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 191 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:52,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 135 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:50:52,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-12-13 17:50:52,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 46. [2022-12-13 17:50:52,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.5625) internal successors, (50), 45 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) [2022-12-13 17:50:52,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2022-12-13 17:50:52,669 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 10 [2022-12-13 17:50:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:50:52,670 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2022-12-13 17:50:52,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2022-12-13 17:50:52,670 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-12-13 17:50:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 17:50:52,670 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:52,670 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:50:52,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:52,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:52,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:52,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:52,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2022-12-13 17:50:52,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:52,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305074123] [2022-12-13 17:50:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:52,876 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 [2022-12-13 17:50:52,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:52,879 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:52,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:52,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:50:52,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:53,000 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 [2022-12-13 17:50:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:50:53,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:50:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:50:53,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:53,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305074123] [2022-12-13 17:50:53,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305074123] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:50:53,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:50:53,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-12-13 17:50:53,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769175475] [2022-12-13 17:50:53,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:50:53,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:50:53,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:53,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:50:53,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:50:53,502 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 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) [2022-12-13 17:50:54,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:54,581 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2022-12-13 17:50:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:50:54,582 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 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 10 [2022-12-13 17:50:54,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:54,584 INFO L225 Difference]: With dead ends: 116 [2022-12-13 17:50:54,584 INFO L226 Difference]: Without dead ends: 116 [2022-12-13 17:50:54,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:50:54,585 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 321 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:54,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 105 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 17:50:54,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-12-13 17:50:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 58. [2022-12-13 17:50:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 57 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) [2022-12-13 17:50:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2022-12-13 17:50:54,592 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 10 [2022-12-13 17:50:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:50:54,593 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2022-12-13 17:50:54,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 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) [2022-12-13 17:50:54,593 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2022-12-13 17:50:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 17:50:54,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:54,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:50:54,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:50:54,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:54,795 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:54,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:54,796 INFO L85 PathProgramCache]: Analyzing trace with hash 363893197, now seen corresponding path program 1 times [2022-12-13 17:50:54,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:54,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291364708] [2022-12-13 17:50:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:54,797 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 [2022-12-13 17:50:54,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:54,798 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:54,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:54,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:50:54,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:50:54,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:50:54,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:54,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291364708] [2022-12-13 17:50:54,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291364708] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:50:54,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:50:54,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:50:54,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206753553] [2022-12-13 17:50:54,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:50:54,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:50:54,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:54,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:50:54,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:50:54,890 INFO L87 Difference]: Start difference. First operand 58 states and 65 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) [2022-12-13 17:50:54,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:54,929 INFO L93 Difference]: Finished difference Result 112 states and 123 transitions. [2022-12-13 17:50:54,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:50:54,929 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 [2022-12-13 17:50:54,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:54,931 INFO L225 Difference]: With dead ends: 112 [2022-12-13 17:50:54,931 INFO L226 Difference]: Without dead ends: 112 [2022-12-13 17:50:54,931 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 [2022-12-13 17:50:54,932 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 84 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:54,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 130 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:50:54,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-12-13 17:50:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 60. [2022-12-13 17:50:54,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 59 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:54,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2022-12-13 17:50:54,938 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 13 [2022-12-13 17:50:54,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:50:54,938 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2022-12-13 17:50:54,938 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) [2022-12-13 17:50:54,938 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-12-13 17:50:54,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 17:50:54,939 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:54,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:50:54,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:50:55,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:55,140 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:55,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:55,142 INFO L85 PathProgramCache]: Analyzing trace with hash 363893999, now seen corresponding path program 1 times [2022-12-13 17:50:55,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:55,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114753791] [2022-12-13 17:50:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:55,143 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 [2022-12-13 17:50:55,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:55,146 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:55,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:55,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:50:55,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:55,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:50:55,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:50:55,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:55,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114753791] [2022-12-13 17:50:55,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114753791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:50:55,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:50:55,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:50:55,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73794845] [2022-12-13 17:50:55,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:50:55,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:50:55,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:55,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:50:55,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:50:55,279 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2022-12-13 17:50:55,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:55,319 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2022-12-13 17:50:55,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:50:55,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 [2022-12-13 17:50:55,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:55,320 INFO L225 Difference]: With dead ends: 90 [2022-12-13 17:50:55,321 INFO L226 Difference]: Without dead ends: 90 [2022-12-13 17:50:55,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:50:55,322 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 36 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:55,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 155 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:50:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-12-13 17:50:55,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 61. [2022-12-13 17:50:55,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 47 states have (on average 1.446808510638298) internal successors, (68), 60 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2022-12-13 17:50:55,326 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 13 [2022-12-13 17:50:55,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:50:55,326 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2022-12-13 17:50:55,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2022-12-13 17:50:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2022-12-13 17:50:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 17:50:55,327 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:55,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:50:55,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:50:55,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:55,529 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:55,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:55,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1064957775, now seen corresponding path program 1 times [2022-12-13 17:50:55,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:55,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948370434] [2022-12-13 17:50:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:55,532 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 [2022-12-13 17:50:55,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:55,536 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:55,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:55,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:50:55,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:50:55,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:50:55,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:55,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948370434] [2022-12-13 17:50:55,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948370434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:50:55,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:50:55,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:50:55,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007413069] [2022-12-13 17:50:55,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:50:55,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:50:55,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:55,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:50:55,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:50:55,706 INFO L87 Difference]: Start difference. First operand 61 states and 68 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) [2022-12-13 17:50:55,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:55,742 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2022-12-13 17:50:55,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:50:55,743 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 [2022-12-13 17:50:55,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:55,743 INFO L225 Difference]: With dead ends: 86 [2022-12-13 17:50:55,743 INFO L226 Difference]: Without dead ends: 86 [2022-12-13 17:50:55,743 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 [2022-12-13 17:50:55,744 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 85 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:55,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 68 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:50:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-13 17:50:55,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 62. [2022-12-13 17:50:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.4375) internal successors, (69), 61 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:55,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2022-12-13 17:50:55,746 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 13 [2022-12-13 17:50:55,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:50:55,747 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2022-12-13 17:50:55,747 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) [2022-12-13 17:50:55,747 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2022-12-13 17:50:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 17:50:55,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:55,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:50:55,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:50:55,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:55,949 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:55,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958577, now seen corresponding path program 1 times [2022-12-13 17:50:55,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:55,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815947083] [2022-12-13 17:50:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:55,952 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 [2022-12-13 17:50:55,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:55,954 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:55,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:56,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:50:56,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:56,096 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 7 [2022-12-13 17:50:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:50:56,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:50:56,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:56,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815947083] [2022-12-13 17:50:56,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815947083] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:50:56,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:50:56,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:50:56,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417097158] [2022-12-13 17:50:56,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:50:56,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:50:56,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:56,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:50:56,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:50:56,116 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) 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) [2022-12-13 17:50:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:56,216 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2022-12-13 17:50:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:50:56,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 [2022-12-13 17:50:56,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:56,217 INFO L225 Difference]: With dead ends: 56 [2022-12-13 17:50:56,217 INFO L226 Difference]: Without dead ends: 56 [2022-12-13 17:50:56,217 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 [2022-12-13 17:50:56,218 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 44 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:56,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 28 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:50:56,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-13 17:50:56,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-12-13 17:50:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.3125) internal successors, (63), 55 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-12-13 17:50:56,220 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 13 [2022-12-13 17:50:56,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:50:56,220 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-12-13 17:50:56,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) 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) [2022-12-13 17:50:56,220 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-12-13 17:50:56,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 17:50:56,220 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:56,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:50:56,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:50:56,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:56,421 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:56,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958578, now seen corresponding path program 1 times [2022-12-13 17:50:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:56,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756054644] [2022-12-13 17:50:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:56,422 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 [2022-12-13 17:50:56,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:56,423 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:56,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:56,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 17:50:56,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:56,476 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 [2022-12-13 17:50:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:50:56,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:50:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:50:57,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:57,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756054644] [2022-12-13 17:50:57,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756054644] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 17:50:57,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:50:57,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-12-13 17:50:57,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945685651] [2022-12-13 17:50:57,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:50:57,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:50:57,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:57,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:50:57,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:50:57,302 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2022-12-13 17:50:57,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:57,613 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2022-12-13 17:50:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:50:57,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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 [2022-12-13 17:50:57,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:57,614 INFO L225 Difference]: With dead ends: 61 [2022-12-13 17:50:57,614 INFO L226 Difference]: Without dead ends: 61 [2022-12-13 17:50:57,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:50:57,615 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 110 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:57,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 42 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:50:57,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-13 17:50:57,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2022-12-13 17:50:57,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.28) internal successors, (64), 55 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:57,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-12-13 17:50:57,618 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 13 [2022-12-13 17:50:57,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:50:57,618 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-12-13 17:50:57,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2022-12-13 17:50:57,618 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-12-13 17:50:57,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 17:50:57,619 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:57,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:50:57,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:50:57,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:57,821 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:57,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:57,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1346022463, now seen corresponding path program 1 times [2022-12-13 17:50:57,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:57,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612802835] [2022-12-13 17:50:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:57,824 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 [2022-12-13 17:50:57,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:57,826 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:57,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:57,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 17:50:57,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:57,916 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 [2022-12-13 17:50:58,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:50:58,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:50:58,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:58,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612802835] [2022-12-13 17:50:58,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612802835] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:50:58,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:50:58,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:50:58,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469933443] [2022-12-13 17:50:58,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:50:58,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:50:58,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:58,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:50:58,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:50:58,129 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:58,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:58,681 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2022-12-13 17:50:58,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:50:58,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-12-13 17:50:58,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:58,682 INFO L225 Difference]: With dead ends: 84 [2022-12-13 17:50:58,682 INFO L226 Difference]: Without dead ends: 84 [2022-12-13 17:50:58,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:50:58,683 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 91 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:58,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 49 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:50:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-12-13 17:50:58,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2022-12-13 17:50:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 65 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) [2022-12-13 17:50:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2022-12-13 17:50:58,687 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 14 [2022-12-13 17:50:58,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:50:58,687 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2022-12-13 17:50:58,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2022-12-13 17:50:58,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 17:50:58,688 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:58,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:50:58,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:50:58,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:58,890 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:58,891 INFO L85 PathProgramCache]: Analyzing trace with hash 267720213, now seen corresponding path program 1 times [2022-12-13 17:50:58,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:58,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229694198] [2022-12-13 17:50:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:58,892 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 [2022-12-13 17:50:58,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:58,895 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:58,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:58,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:50:58,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:59,020 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc9#1.base_8| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_8| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_8|)))) is different from true [2022-12-13 17:50:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:50:59,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:50:59,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:59,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229694198] [2022-12-13 17:50:59,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229694198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:50:59,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:50:59,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:50:59,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597043243] [2022-12-13 17:50:59,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:50:59,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:50:59,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:59,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:50:59,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-12-13 17:50:59,022 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:59,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:59,074 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2022-12-13 17:50:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:50:59,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-12-13 17:50:59,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:59,076 INFO L225 Difference]: With dead ends: 65 [2022-12-13 17:50:59,076 INFO L226 Difference]: Without dead ends: 63 [2022-12-13 17:50:59,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2022-12-13 17:50:59,077 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:59,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 46 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 32 Unchecked, 0.0s Time] [2022-12-13 17:50:59,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-12-13 17:50:59,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-12-13 17:50:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2022-12-13 17:50:59,080 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 16 [2022-12-13 17:50:59,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:50:59,080 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2022-12-13 17:50:59,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:59,080 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2022-12-13 17:50:59,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 17:50:59,081 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:59,081 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:50:59,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:50:59,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:59,282 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:59,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:59,293 INFO L85 PathProgramCache]: Analyzing trace with hash -290583109, now seen corresponding path program 1 times [2022-12-13 17:50:59,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:59,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640780737] [2022-12-13 17:50:59,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:59,295 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 [2022-12-13 17:50:59,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:59,297 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:59,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:59,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:50:59,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:50:59,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:50:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:50:59,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:59,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640780737] [2022-12-13 17:50:59,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640780737] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:50:59,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:50:59,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 17:50:59,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253830817] [2022-12-13 17:50:59,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:50:59,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:50:59,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:59,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:50:59,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:50:59,482 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 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) [2022-12-13 17:50:59,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:59,537 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2022-12-13 17:50:59,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:50:59,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 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 17 [2022-12-13 17:50:59,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:59,538 INFO L225 Difference]: With dead ends: 65 [2022-12-13 17:50:59,539 INFO L226 Difference]: Without dead ends: 54 [2022-12-13 17:50:59,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:50:59,539 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:59,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 141 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:50:59,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-13 17:50:59,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-12-13 17:50:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:50:59,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-12-13 17:50:59,542 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 17 [2022-12-13 17:50:59,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:50:59,543 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-12-13 17:50:59,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 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) [2022-12-13 17:50:59,543 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-12-13 17:50:59,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 17:50:59,543 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:50:59,543 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:50:59,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:59,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:59,744 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:50:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:50:59,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1570446787, now seen corresponding path program 1 times [2022-12-13 17:50:59,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:50:59,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508162706] [2022-12-13 17:50:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:50:59,746 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 [2022-12-13 17:50:59,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:50:59,747 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:50:59,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:50:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:50:59,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:50:59,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:50:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:50:59,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:50:59,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:50:59,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508162706] [2022-12-13 17:50:59,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508162706] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:50:59,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:50:59,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:50:59,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937633222] [2022-12-13 17:50:59,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:50:59,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:50:59,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:50:59,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:50:59,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:50:59,888 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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) [2022-12-13 17:51:00,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:00,073 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-12-13 17:51:00,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:51:00,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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 [2022-12-13 17:51:00,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:00,074 INFO L225 Difference]: With dead ends: 73 [2022-12-13 17:51:00,074 INFO L226 Difference]: Without dead ends: 71 [2022-12-13 17:51:00,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:51:00,075 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 95 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:00,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 72 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:51:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-13 17:51:00,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2022-12-13 17:51:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 53 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:00,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2022-12-13 17:51:00,077 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 17 [2022-12-13 17:51:00,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:00,078 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2022-12-13 17:51:00,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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) [2022-12-13 17:51:00,078 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2022-12-13 17:51:00,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 17:51:00,078 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:00,078 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:00,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:51:00,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:00,280 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:51:00,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:00,281 INFO L85 PathProgramCache]: Analyzing trace with hash -511225436, now seen corresponding path program 1 times [2022-12-13 17:51:00,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:51:00,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537101729] [2022-12-13 17:51:00,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:00,283 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 [2022-12-13 17:51:00,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:51:00,286 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:51:00,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:00,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 17:51:00,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:00,380 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 [2022-12-13 17:51:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:51:00,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:51:01,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:51:01,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537101729] [2022-12-13 17:51:01,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537101729] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:01,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:51:01,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2022-12-13 17:51:01,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493307113] [2022-12-13 17:51:01,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:01,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 17:51:01,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:51:01,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 17:51:01,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:51:01,188 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 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) [2022-12-13 17:51:02,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:02,216 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2022-12-13 17:51:02,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:51:02,217 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 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 18 [2022-12-13 17:51:02,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:02,217 INFO L225 Difference]: With dead ends: 82 [2022-12-13 17:51:02,217 INFO L226 Difference]: Without dead ends: 82 [2022-12-13 17:51:02,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2022-12-13 17:51:02,218 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 197 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:02,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 64 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:51:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-12-13 17:51:02,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 57. [2022-12-13 17:51:02,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 56 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2022-12-13 17:51:02,222 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2022-12-13 17:51:02,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:02,222 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2022-12-13 17:51:02,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 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) [2022-12-13 17:51:02,222 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-12-13 17:51:02,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 17:51:02,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:02,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:02,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:51:02,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:02,424 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:51:02,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:02,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1331880655, now seen corresponding path program 1 times [2022-12-13 17:51:02,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:51:02,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569153746] [2022-12-13 17:51:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:02,427 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 [2022-12-13 17:51:02,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:51:02,429 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:51:02,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:02,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 17:51:02,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:02,549 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 [2022-12-13 17:51:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:02,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:03,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:51:03,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569153746] [2022-12-13 17:51:03,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569153746] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:03,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:51:03,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2022-12-13 17:51:03,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993164497] [2022-12-13 17:51:03,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:03,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 17:51:03,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:51:03,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 17:51:03,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:51:03,759 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 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) [2022-12-13 17:51:04,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:04,535 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2022-12-13 17:51:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:51:04,536 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 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 19 [2022-12-13 17:51:04,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:04,536 INFO L225 Difference]: With dead ends: 62 [2022-12-13 17:51:04,536 INFO L226 Difference]: Without dead ends: 57 [2022-12-13 17:51:04,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2022-12-13 17:51:04,537 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 75 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:04,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 76 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 17:51:04,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-13 17:51:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-12-13 17:51:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 56 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2022-12-13 17:51:04,540 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 19 [2022-12-13 17:51:04,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:04,541 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2022-12-13 17:51:04,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 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) [2022-12-13 17:51:04,541 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2022-12-13 17:51:04,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 17:51:04,541 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:04,541 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2022-12-13 17:51:04,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:04,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:04,743 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:51:04,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash 302966996, now seen corresponding path program 2 times [2022-12-13 17:51:04,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:51:04,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856651187] [2022-12-13 17:51:04,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:51:04,745 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 [2022-12-13 17:51:04,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:51:04,748 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:51:04,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:04,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:51:04,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:51:04,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 17:51:04,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:04,838 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 [2022-12-13 17:51:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:05,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:06,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:51:06,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856651187] [2022-12-13 17:51:06,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856651187] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:06,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:51:06,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-12-13 17:51:06,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286237351] [2022-12-13 17:51:06,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:06,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 17:51:06,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:51:06,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 17:51:06,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:51:06,301 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:08,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:51:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:11,697 INFO L93 Difference]: Finished difference Result 319 states and 384 transitions. [2022-12-13 17:51:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 17:51:11,699 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-12-13 17:51:11,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:11,700 INFO L225 Difference]: With dead ends: 319 [2022-12-13 17:51:11,700 INFO L226 Difference]: Without dead ends: 319 [2022-12-13 17:51:11,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=327, Invalid=665, Unknown=0, NotChecked=0, Total=992 [2022-12-13 17:51:11,700 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 801 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:11,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 310 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 17:51:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-12-13 17:51:11,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 81. [2022-12-13 17:51:11,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 80 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2022-12-13 17:51:11,704 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 22 [2022-12-13 17:51:11,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:11,704 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2022-12-13 17:51:11,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:11,704 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2022-12-13 17:51:11,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 17:51:11,704 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:11,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:11,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:51:11,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:11,906 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:51:11,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:11,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1637861780, now seen corresponding path program 2 times [2022-12-13 17:51:11,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:51:11,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413158425] [2022-12-13 17:51:11,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:51:11,909 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 [2022-12-13 17:51:11,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:51:11,912 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:51:11,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:11,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:51:11,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:51:11,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 17:51:11,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:11,997 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 [2022-12-13 17:51:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:51:12,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:51:13,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:51:13,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413158425] [2022-12-13 17:51:13,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413158425] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:13,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:51:13,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-12-13 17:51:13,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751046125] [2022-12-13 17:51:13,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:13,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 17:51:13,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:51:13,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 17:51:13,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:51:13,563 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 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) [2022-12-13 17:51:17,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:17,916 INFO L93 Difference]: Finished difference Result 165 states and 196 transitions. [2022-12-13 17:51:17,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 17:51:17,917 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 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 23 [2022-12-13 17:51:17,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:17,918 INFO L225 Difference]: With dead ends: 165 [2022-12-13 17:51:17,918 INFO L226 Difference]: Without dead ends: 165 [2022-12-13 17:51:17,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=418, Invalid=988, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 17:51:17,918 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 273 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:17,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 63 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 17:51:17,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-12-13 17:51:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 148. [2022-12-13 17:51:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.2191780821917808) internal successors, (178), 147 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 178 transitions. [2022-12-13 17:51:17,921 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 178 transitions. Word has length 23 [2022-12-13 17:51:17,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:17,921 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 178 transitions. [2022-12-13 17:51:17,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 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) [2022-12-13 17:51:17,921 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 178 transitions. [2022-12-13 17:51:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 17:51:17,922 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:17,922 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:17,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:51:18,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:18,123 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:51:18,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1795053594, now seen corresponding path program 1 times [2022-12-13 17:51:18,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:51:18,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301806800] [2022-12-13 17:51:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:18,126 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 [2022-12-13 17:51:18,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:51:18,129 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:51:18,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:18,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 17:51:18,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:51:18,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:18,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:51:18,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301806800] [2022-12-13 17:51:18,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301806800] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:18,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:51:18,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2022-12-13 17:51:18,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350326343] [2022-12-13 17:51:18,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:18,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 17:51:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:51:18,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 17:51:18,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-12-13 17:51:18,850 INFO L87 Difference]: Start difference. First operand 148 states and 178 transitions. Second operand has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:19,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:19,627 INFO L93 Difference]: Finished difference Result 191 states and 226 transitions. [2022-12-13 17:51:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 17:51:19,628 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 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 31 [2022-12-13 17:51:19,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:19,629 INFO L225 Difference]: With dead ends: 191 [2022-12-13 17:51:19,629 INFO L226 Difference]: Without dead ends: 148 [2022-12-13 17:51:19,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=621, Unknown=0, NotChecked=0, Total=812 [2022-12-13 17:51:19,630 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 134 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:19,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 119 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:51:19,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-12-13 17:51:19,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-12-13 17:51:19,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.2123287671232876) internal successors, (177), 147 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 177 transitions. [2022-12-13 17:51:19,634 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 177 transitions. Word has length 31 [2022-12-13 17:51:19,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:19,634 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 177 transitions. [2022-12-13 17:51:19,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:19,634 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 177 transitions. [2022-12-13 17:51:19,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 17:51:19,635 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:19,635 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:19,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:19,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:19,836 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:51:19,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:19,838 INFO L85 PathProgramCache]: Analyzing trace with hash -403560393, now seen corresponding path program 2 times [2022-12-13 17:51:19,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:51:19,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114048880] [2022-12-13 17:51:19,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:51:19,840 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 [2022-12-13 17:51:19,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:51:19,844 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:51:19,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:19,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:51:19,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:51:19,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 17:51:19,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:19,958 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 [2022-12-13 17:51:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 17:51:20,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:20,808 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 17:51:20,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:51:20,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114048880] [2022-12-13 17:51:20,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114048880] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:20,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:51:20,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-12-13 17:51:20,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370662713] [2022-12-13 17:51:20,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:20,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 17:51:20,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:51:20,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 17:51:20,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:51:20,810 INFO L87 Difference]: Start difference. First operand 148 states and 177 transitions. Second operand has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:21,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:21,655 INFO L93 Difference]: Finished difference Result 152 states and 179 transitions. [2022-12-13 17:51:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:51:21,656 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 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 35 [2022-12-13 17:51:21,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:21,656 INFO L225 Difference]: With dead ends: 152 [2022-12-13 17:51:21,656 INFO L226 Difference]: Without dead ends: 152 [2022-12-13 17:51:21,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-12-13 17:51:21,657 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 175 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:21,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 59 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:51:21,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-12-13 17:51:21,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 126. [2022-12-13 17:51:21,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 124 states have (on average 1.1935483870967742) internal successors, (148), 125 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2022-12-13 17:51:21,661 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 35 [2022-12-13 17:51:21,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:21,661 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2022-12-13 17:51:21,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:21,661 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2022-12-13 17:51:21,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 17:51:21,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:21,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:21,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:51:21,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:21,864 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:51:21,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1815017593, now seen corresponding path program 3 times [2022-12-13 17:51:21,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:51:21,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044467729] [2022-12-13 17:51:21,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:51:21,866 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 [2022-12-13 17:51:21,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:51:21,869 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:51:21,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:21,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 17:51:21,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:51:21,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 17:51:21,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:22,006 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 [2022-12-13 17:51:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 17:51:22,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 17:51:24,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:51:24,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044467729] [2022-12-13 17:51:24,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044467729] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:24,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:51:24,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2022-12-13 17:51:24,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908186813] [2022-12-13 17:51:24,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:24,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 17:51:24,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:51:24,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 17:51:24,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-12-13 17:51:24,591 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:28,861 INFO L93 Difference]: Finished difference Result 230 states and 267 transitions. [2022-12-13 17:51:28,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 17:51:28,863 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-12-13 17:51:28,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:28,863 INFO L225 Difference]: With dead ends: 230 [2022-12-13 17:51:28,863 INFO L226 Difference]: Without dead ends: 230 [2022-12-13 17:51:28,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=393, Invalid=1247, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 17:51:28,864 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 739 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:28,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 163 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 17:51:28,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-12-13 17:51:28,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 164. [2022-12-13 17:51:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 162 states have (on average 1.1975308641975309) internal successors, (194), 163 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 194 transitions. [2022-12-13 17:51:28,867 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 194 transitions. Word has length 38 [2022-12-13 17:51:28,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:28,867 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 194 transitions. [2022-12-13 17:51:28,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:28,867 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 194 transitions. [2022-12-13 17:51:28,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 17:51:28,868 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:28,868 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:28,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:29,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:29,069 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:51:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:29,070 INFO L85 PathProgramCache]: Analyzing trace with hash 63698229, now seen corresponding path program 4 times [2022-12-13 17:51:29,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:51:29,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060636729] [2022-12-13 17:51:29,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 17:51:29,071 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 [2022-12-13 17:51:29,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:51:29,074 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:51:29,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:29,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 17:51:29,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:51:29,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 17:51:29,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:29,318 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:51:29,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:51:29,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:51:29,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060636729] [2022-12-13 17:51:29,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060636729] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:29,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:51:29,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-12-13 17:51:29,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234291591] [2022-12-13 17:51:29,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:29,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 17:51:29,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:51:29,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 17:51:29,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:51:29,620 INFO L87 Difference]: Start difference. First operand 164 states and 194 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:30,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:30,182 INFO L93 Difference]: Finished difference Result 165 states and 193 transitions. [2022-12-13 17:51:30,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:51:30,183 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 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 40 [2022-12-13 17:51:30,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:30,184 INFO L225 Difference]: With dead ends: 165 [2022-12-13 17:51:30,184 INFO L226 Difference]: Without dead ends: 165 [2022-12-13 17:51:30,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2022-12-13 17:51:30,185 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 323 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:30,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 94 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:51:30,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-12-13 17:51:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2022-12-13 17:51:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 162 states have (on average 1.191358024691358) internal successors, (193), 163 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2022-12-13 17:51:30,188 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 40 [2022-12-13 17:51:30,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:30,188 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2022-12-13 17:51:30,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:30,188 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2022-12-13 17:51:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 17:51:30,189 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:30,189 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:30,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:51:30,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:30,390 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:51:30,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:30,391 INFO L85 PathProgramCache]: Analyzing trace with hash -73696953, now seen corresponding path program 3 times [2022-12-13 17:51:30,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:51:30,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337334095] [2022-12-13 17:51:30,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:51:30,392 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 [2022-12-13 17:51:30,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:51:30,395 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:51:30,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:30,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 17:51:30,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:51:30,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 17:51:30,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:30,662 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 [2022-12-13 17:51:31,314 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:31,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:32,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:51:32,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337334095] [2022-12-13 17:51:32,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337334095] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:32,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:51:32,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-12-13 17:51:32,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064602882] [2022-12-13 17:51:32,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:32,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 17:51:32,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:51:32,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 17:51:32,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-12-13 17:51:32,190 INFO L87 Difference]: Start difference. First operand 164 states and 193 transitions. Second operand has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:34,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:34,692 INFO L93 Difference]: Finished difference Result 438 states and 505 transitions. [2022-12-13 17:51:34,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 17:51:34,693 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-12-13 17:51:34,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:34,694 INFO L225 Difference]: With dead ends: 438 [2022-12-13 17:51:34,694 INFO L226 Difference]: Without dead ends: 432 [2022-12-13 17:51:34,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=302, Invalid=1104, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 17:51:34,695 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 530 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:34,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 326 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 17:51:34,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-12-13 17:51:34,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 401. [2022-12-13 17:51:34,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 399 states have (on average 1.1804511278195489) internal successors, (471), 400 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:34,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 471 transitions. [2022-12-13 17:51:34,700 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 471 transitions. Word has length 42 [2022-12-13 17:51:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:34,701 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 471 transitions. [2022-12-13 17:51:34,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 471 transitions. [2022-12-13 17:51:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 17:51:34,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:34,701 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:34,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:34,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:34,903 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:51:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:34,904 INFO L85 PathProgramCache]: Analyzing trace with hash -43465353, now seen corresponding path program 5 times [2022-12-13 17:51:34,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:51:34,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150884255] [2022-12-13 17:51:34,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 17:51:34,906 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 [2022-12-13 17:51:34,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:51:34,909 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:51:34,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:35,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 17:51:35,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:51:35,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:51:35,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 17:51:35,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 17:51:35,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:51:35,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150884255] [2022-12-13 17:51:35,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150884255] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:35,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:51:35,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-12-13 17:51:35,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492743298] [2022-12-13 17:51:35,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:35,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 17:51:35,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:51:35,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 17:51:35,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:51:35,714 INFO L87 Difference]: Start difference. First operand 401 states and 471 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:36,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:36,353 INFO L93 Difference]: Finished difference Result 531 states and 612 transitions. [2022-12-13 17:51:36,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 17:51:36,354 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 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 45 [2022-12-13 17:51:36,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:36,356 INFO L225 Difference]: With dead ends: 531 [2022-12-13 17:51:36,356 INFO L226 Difference]: Without dead ends: 354 [2022-12-13 17:51:36,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2022-12-13 17:51:36,356 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 88 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:36,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 224 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 17:51:36,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-12-13 17:51:36,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 333. [2022-12-13 17:51:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 331 states have (on average 1.1268882175226587) internal successors, (373), 332 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:36,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 373 transitions. [2022-12-13 17:51:36,361 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 373 transitions. Word has length 45 [2022-12-13 17:51:36,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:36,361 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 373 transitions. [2022-12-13 17:51:36,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:36,361 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 373 transitions. [2022-12-13 17:51:36,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-13 17:51:36,362 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:36,362 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2022-12-13 17:51:36,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:51:36,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:36,563 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:51:36,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:36,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1048882662, now seen corresponding path program 3 times [2022-12-13 17:51:36,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:51:36,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601740599] [2022-12-13 17:51:36,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:51:36,566 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 [2022-12-13 17:51:36,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:51:36,569 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:51:36,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:51:36,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-13 17:51:36,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:51:36,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 17:51:36,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:36,868 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 [2022-12-13 17:51:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:37,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:40,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:51:40,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601740599] [2022-12-13 17:51:40,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601740599] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:40,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:51:40,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2022-12-13 17:51:40,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999452692] [2022-12-13 17:51:40,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:40,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 17:51:40,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:51:40,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 17:51:40,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-12-13 17:51:40,609 INFO L87 Difference]: Start difference. First operand 333 states and 373 transitions. Second operand has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 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) [2022-12-13 17:51:47,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:52:05,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:05,271 INFO L93 Difference]: Finished difference Result 2766 states and 3105 transitions. [2022-12-13 17:52:05,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-13 17:52:05,272 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 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) Word has length 46 [2022-12-13 17:52:05,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:05,276 INFO L225 Difference]: With dead ends: 2766 [2022-12-13 17:52:05,276 INFO L226 Difference]: Without dead ends: 2766 [2022-12-13 17:52:05,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=1194, Invalid=2588, Unknown=0, NotChecked=0, Total=3782 [2022-12-13 17:52:05,277 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 2504 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:05,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2504 Valid, 1090 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-13 17:52:05,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2022-12-13 17:52:05,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 381. [2022-12-13 17:52:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 379 states have (on average 1.1424802110817942) internal successors, (433), 380 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:52:05,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 433 transitions. [2022-12-13 17:52:05,293 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 433 transitions. Word has length 46 [2022-12-13 17:52:05,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:05,293 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 433 transitions. [2022-12-13 17:52:05,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 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) [2022-12-13 17:52:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 433 transitions. [2022-12-13 17:52:05,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 17:52:05,293 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:05,294 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:05,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:52:05,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:52:05,495 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:52:05,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash -557992115, now seen corresponding path program 4 times [2022-12-13 17:52:05,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:52:05,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857165604] [2022-12-13 17:52:05,497 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 17:52:05,498 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 [2022-12-13 17:52:05,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:52:05,500 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:52:05,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:52:05,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 17:52:05,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:52:05,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 17:52:05,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:05,663 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 [2022-12-13 17:52:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 17:52:06,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:52:08,946 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 17:52:08,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:52:08,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857165604] [2022-12-13 17:52:08,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857165604] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:52:08,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:52:08,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-12-13 17:52:08,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83627865] [2022-12-13 17:52:08,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:52:08,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 17:52:08,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:52:08,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 17:52:08,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2022-12-13 17:52:08,947 INFO L87 Difference]: Start difference. First operand 381 states and 433 transitions. Second operand has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 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) [2022-12-13 17:52:39,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:39,680 INFO L93 Difference]: Finished difference Result 487 states and 553 transitions. [2022-12-13 17:52:39,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-13 17:52:39,681 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 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) Word has length 50 [2022-12-13 17:52:39,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:39,682 INFO L225 Difference]: With dead ends: 487 [2022-12-13 17:52:39,682 INFO L226 Difference]: Without dead ends: 487 [2022-12-13 17:52:39,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=1118, Invalid=3042, Unknown=0, NotChecked=0, Total=4160 [2022-12-13 17:52:39,683 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 889 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:39,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 275 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-12-13 17:52:39,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-12-13 17:52:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 471. [2022-12-13 17:52:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 469 states have (on average 1.1535181236673775) internal successors, (541), 470 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:52:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 541 transitions. [2022-12-13 17:52:39,688 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 541 transitions. Word has length 50 [2022-12-13 17:52:39,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:39,688 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 541 transitions. [2022-12-13 17:52:39,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 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) [2022-12-13 17:52:39,688 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 541 transitions. [2022-12-13 17:52:39,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-13 17:52:39,689 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:39,689 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:39,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:52:39,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:52:39,889 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:52:39,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:39,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1100826424, now seen corresponding path program 6 times [2022-12-13 17:52:39,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:52:39,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108110548] [2022-12-13 17:52:39,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 17:52:39,890 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 [2022-12-13 17:52:39,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:52:39,891 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:52:39,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:52:40,094 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-12-13 17:52:40,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:52:40,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 17:52:40,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 50 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 17:52:40,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:52:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 29 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 17:52:41,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:52:41,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108110548] [2022-12-13 17:52:41,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108110548] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:52:41,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:52:41,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2022-12-13 17:52:41,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679614877] [2022-12-13 17:52:41,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:52:41,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 17:52:41,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:52:41,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 17:52:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2022-12-13 17:52:41,433 INFO L87 Difference]: Start difference. First operand 471 states and 541 transitions. Second operand has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 26 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) [2022-12-13 17:52:44,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:44,276 INFO L93 Difference]: Finished difference Result 483 states and 546 transitions. [2022-12-13 17:52:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 17:52:44,277 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 26 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) Word has length 54 [2022-12-13 17:52:44,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:44,278 INFO L225 Difference]: With dead ends: 483 [2022-12-13 17:52:44,278 INFO L226 Difference]: Without dead ends: 347 [2022-12-13 17:52:44,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=535, Invalid=2015, Unknown=0, NotChecked=0, Total=2550 [2022-12-13 17:52:44,279 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 437 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:44,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 295 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 17:52:44,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-12-13 17:52:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2022-12-13 17:52:44,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 343 states have (on average 1.163265306122449) internal successors, (399), 344 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:52:44,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 399 transitions. [2022-12-13 17:52:44,282 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 399 transitions. Word has length 54 [2022-12-13 17:52:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:44,282 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 399 transitions. [2022-12-13 17:52:44,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 26 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) [2022-12-13 17:52:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 399 transitions. [2022-12-13 17:52:44,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 17:52:44,283 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:44,283 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:44,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:52:44,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:52:44,484 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:52:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1495142415, now seen corresponding path program 7 times [2022-12-13 17:52:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:52:44,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964723260] [2022-12-13 17:52:44,487 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 17:52:44,487 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 [2022-12-13 17:52:44,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:52:44,490 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:52:44,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:52:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:44,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 17:52:44,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:44,691 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 [2022-12-13 17:52:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 17:52:45,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:52:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 1 proven. 100 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 17:52:48,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:52:48,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964723260] [2022-12-13 17:52:48,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964723260] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:52:48,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:52:48,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2022-12-13 17:52:48,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061269082] [2022-12-13 17:52:48,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:52:48,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 17:52:48,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:52:48,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 17:52:48,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2022-12-13 17:52:48,113 INFO L87 Difference]: Start difference. First operand 345 states and 399 transitions. Second operand has 27 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 27 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:52:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:51,806 INFO L93 Difference]: Finished difference Result 483 states and 549 transitions. [2022-12-13 17:52:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 17:52:51,808 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 27 states have internal predecessors, (92), 0 states have call successors, (0), 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 63 [2022-12-13 17:52:51,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:51,809 INFO L225 Difference]: With dead ends: 483 [2022-12-13 17:52:51,809 INFO L226 Difference]: Without dead ends: 483 [2022-12-13 17:52:51,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=579, Invalid=2073, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 17:52:51,809 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 999 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:51,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 276 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 17:52:51,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-12-13 17:52:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 403. [2022-12-13 17:52:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 401 states have (on average 1.1496259351620948) internal successors, (461), 402 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:52:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 461 transitions. [2022-12-13 17:52:51,813 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 461 transitions. Word has length 63 [2022-12-13 17:52:51,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:51,813 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 461 transitions. [2022-12-13 17:52:51,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 27 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:52:51,814 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 461 transitions. [2022-12-13 17:52:51,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 17:52:51,814 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:51,814 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:51,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:52:52,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:52:52,016 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:52:52,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:52,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1428738709, now seen corresponding path program 8 times [2022-12-13 17:52:52,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:52:52,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60154104] [2022-12-13 17:52:52,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:52:52,018 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 [2022-12-13 17:52:52,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:52:52,019 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:52:52,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:52:52,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:52:52,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:52:52,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 17:52:52,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 98 proven. 79 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 17:52:52,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:52:54,430 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 95 proven. 100 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 17:52:54,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:52:54,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60154104] [2022-12-13 17:52:54,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60154104] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:52:54,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:52:54,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2022-12-13 17:52:54,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869469824] [2022-12-13 17:52:54,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:52:54,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 17:52:54,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:52:54,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 17:52:54,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 17:52:54,431 INFO L87 Difference]: Start difference. First operand 403 states and 461 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:52:56,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:56,899 INFO L93 Difference]: Finished difference Result 544 states and 614 transitions. [2022-12-13 17:52:56,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 17:52:56,901 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 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 73 [2022-12-13 17:52:56,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:56,901 INFO L225 Difference]: With dead ends: 544 [2022-12-13 17:52:56,901 INFO L226 Difference]: Without dead ends: 403 [2022-12-13 17:52:56,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=421, Invalid=1835, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 17:52:56,902 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 246 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:56,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 423 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 17:52:56,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-12-13 17:52:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2022-12-13 17:52:56,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 401 states have (on average 1.14713216957606) internal successors, (460), 402 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:52:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 460 transitions. [2022-12-13 17:52:56,913 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 460 transitions. Word has length 73 [2022-12-13 17:52:56,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:56,913 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 460 transitions. [2022-12-13 17:52:56,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:52:56,913 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 460 transitions. [2022-12-13 17:52:56,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 17:52:56,914 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:56,914 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:56,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:52:57,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:52:57,116 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:52:57,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:57,117 INFO L85 PathProgramCache]: Analyzing trace with hash 348270194, now seen corresponding path program 9 times [2022-12-13 17:52:57,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:52:57,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447880760] [2022-12-13 17:52:57,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:52:57,118 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 [2022-12-13 17:52:57,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:52:57,121 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:52:57,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:52:57,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 17:52:57,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:52:57,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 17:52:57,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:57,284 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 [2022-12-13 17:52:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 17:52:58,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:53:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 1 proven. 118 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 17:53:02,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:53:02,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447880760] [2022-12-13 17:53:02,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447880760] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:02,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:53:02,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-12-13 17:53:02,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320762905] [2022-12-13 17:53:02,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:02,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 17:53:02,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:53:02,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 17:53:02,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2022-12-13 17:53:02,049 INFO L87 Difference]: Start difference. First operand 403 states and 460 transitions. Second operand has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:53:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:53:21,932 INFO L93 Difference]: Finished difference Result 509 states and 581 transitions. [2022-12-13 17:53:21,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-13 17:53:21,933 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 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 77 [2022-12-13 17:53:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:53:21,934 INFO L225 Difference]: With dead ends: 509 [2022-12-13 17:53:21,934 INFO L226 Difference]: Without dead ends: 509 [2022-12-13 17:53:21,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=1024, Invalid=3008, Unknown=0, NotChecked=0, Total=4032 [2022-12-13 17:53:21,935 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1578 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:53:21,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 244 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 17:53:21,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-12-13 17:53:21,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 340. [2022-12-13 17:53:21,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 338 states have (on average 1.1568047337278107) internal successors, (391), 339 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:53:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 391 transitions. [2022-12-13 17:53:21,939 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 391 transitions. Word has length 77 [2022-12-13 17:53:21,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:53:21,939 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 391 transitions. [2022-12-13 17:53:21,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:53:21,939 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 391 transitions. [2022-12-13 17:53:21,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-13 17:53:21,940 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:53:21,941 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:21,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 17:53:22,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:53:22,141 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:53:22,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1702221328, now seen corresponding path program 5 times [2022-12-13 17:53:22,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:53:22,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763493346] [2022-12-13 17:53:22,142 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 17:53:22,142 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 [2022-12-13 17:53:22,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:53:22,143 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:53:22,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 (32)] Waiting until timeout for monitored process [2022-12-13 17:53:22,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-12-13 17:53:22,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:53:22,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 17:53:22,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:22,630 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 [2022-12-13 17:53:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 132 proven. 159 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 17:53:23,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:53:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:53:29,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:53:29,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763493346] [2022-12-13 17:53:29,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763493346] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:29,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:53:29,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 41 [2022-12-13 17:53:29,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795816618] [2022-12-13 17:53:29,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:29,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-13 17:53:29,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:53:29,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-13 17:53:29,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1447, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 17:53:29,300 INFO L87 Difference]: Start difference. First operand 340 states and 391 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:53:51,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:53:51,485 INFO L93 Difference]: Finished difference Result 895 states and 1014 transitions. [2022-12-13 17:53:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-13 17:53:51,486 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 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 84 [2022-12-13 17:53:51,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:53:51,488 INFO L225 Difference]: With dead ends: 895 [2022-12-13 17:53:51,488 INFO L226 Difference]: Without dead ends: 891 [2022-12-13 17:53:51,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=1086, Invalid=5234, Unknown=0, NotChecked=0, Total=6320 [2022-12-13 17:53:51,489 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 851 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 2622 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:53:51,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1238 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2622 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-12-13 17:53:51,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-12-13 17:53:51,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 850. [2022-12-13 17:53:51,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 848 states have (on average 1.153301886792453) internal successors, (978), 849 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:53:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 978 transitions. [2022-12-13 17:53:51,496 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 978 transitions. Word has length 84 [2022-12-13 17:53:51,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:53:51,496 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 978 transitions. [2022-12-13 17:53:51,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:53:51,496 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 978 transitions. [2022-12-13 17:53:51,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 17:53:51,497 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:53:51,497 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:51,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 (32)] Ended with exit code 0 [2022-12-13 17:53:51,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:53:51,698 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:53:51,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:51,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1987259542, now seen corresponding path program 6 times [2022-12-13 17:53:51,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:53:51,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023218149] [2022-12-13 17:53:51,701 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 17:53:51,701 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 [2022-12-13 17:53:51,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:53:51,704 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:53:51,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 (33)] Waiting until timeout for monitored process [2022-12-13 17:53:52,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-12-13 17:53:52,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:53:52,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 17:53:52,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:52,455 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 [2022-12-13 17:53:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 86 proven. 284 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 17:53:54,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:54:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:54:03,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:54:03,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023218149] [2022-12-13 17:54:03,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023218149] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:54:03,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:54:03,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27] total 50 [2022-12-13 17:54:03,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558305571] [2022-12-13 17:54:03,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:54:03,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 17:54:03,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:54:03,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 17:54:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=2149, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 17:54:03,852 INFO L87 Difference]: Start difference. First operand 850 states and 978 transitions. Second operand has 50 states, 50 states have (on average 3.56) internal successors, (178), 50 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:21,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:54:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:54:48,855 INFO L93 Difference]: Finished difference Result 1415 states and 1594 transitions. [2022-12-13 17:54:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-12-13 17:54:48,855 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.56) internal successors, (178), 50 states have internal predecessors, (178), 0 states have call successors, (0), 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 92 [2022-12-13 17:54:48,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:54:48,857 INFO L225 Difference]: With dead ends: 1415 [2022-12-13 17:54:48,857 INFO L226 Difference]: Without dead ends: 1407 [2022-12-13 17:54:48,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5451 ImplicationChecksByTransitivity, 36.8s TimeCoverageRelationStatistics Valid=3813, Invalid=17067, Unknown=0, NotChecked=0, Total=20880 [2022-12-13 17:54:48,862 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 2810 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 6410 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2810 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 6504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 6410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:54:48,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2810 Valid, 2926 Invalid, 6504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 6410 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2022-12-13 17:54:48,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2022-12-13 17:54:48,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1090. [2022-12-13 17:54:48,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1088 states have (on average 1.150735294117647) internal successors, (1252), 1089 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1252 transitions. [2022-12-13 17:54:48,871 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1252 transitions. Word has length 92 [2022-12-13 17:54:48,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:54:48,872 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1252 transitions. [2022-12-13 17:54:48,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.56) internal successors, (178), 50 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1252 transitions. [2022-12-13 17:54:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 17:54:48,873 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:54:48,873 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1] [2022-12-13 17:54:48,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 (33)] Ended with exit code 0 [2022-12-13 17:54:49,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 17:54:49,074 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 17:54:49,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:49,075 INFO L85 PathProgramCache]: Analyzing trace with hash 2084926986, now seen corresponding path program 4 times [2022-12-13 17:54:49,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:54:49,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734418139] [2022-12-13 17:54:49,077 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 17:54:49,077 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 [2022-12-13 17:54:49,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:54:49,080 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 17:54:49,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 (34)] Waiting until timeout for monitored process [2022-12-13 17:54:49,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 17:54:49,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:54:49,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 17:54:49,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:54:49,273 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 [2022-12-13 17:54:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:54:51,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:55:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:55:02,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:55:02,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734418139] [2022-12-13 17:55:02,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734418139] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:55:02,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:55:02,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2022-12-13 17:55:02,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346966988] [2022-12-13 17:55:02,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:55:02,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-12-13 17:55:02,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:55:02,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-12-13 17:55:02,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=854, Invalid=2452, Unknown=0, NotChecked=0, Total=3306 [2022-12-13 17:55:02,957 INFO L87 Difference]: Start difference. First operand 1090 states and 1252 transitions. Second operand has 58 states, 57 states have (on average 3.263157894736842) internal successors, (186), 58 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:18,438 WARN L233 SmtUtils]: Spent 7.97s on a formula simplification that was a NOOP. DAG size: 256 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:55:51,883 WARN L233 SmtUtils]: Spent 32.07s on a formula simplification. DAG size of input: 252 DAG size of output: 252 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:55:54,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:55:56,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:55:58,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:56:13,939 WARN L233 SmtUtils]: Spent 14.42s on a formula simplification that was a NOOP. DAG size: 246 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:56:40,199 WARN L233 SmtUtils]: Spent 24.57s on a formula simplification. DAG size of input: 241 DAG size of output: 241 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:56:42,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:56:44,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:56:46,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:56:59,521 WARN L233 SmtUtils]: Spent 11.07s on a formula simplification that was a NOOP. DAG size: 235 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:57:26,503 WARN L233 SmtUtils]: Spent 25.29s on a formula simplification. DAG size of input: 230 DAG size of output: 230 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:57:29,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:57:31,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:57:33,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:57:45,884 WARN L233 SmtUtils]: Spent 10.99s on a formula simplification that was a NOOP. DAG size: 225 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:58:10,937 WARN L233 SmtUtils]: Spent 22.99s on a formula simplification. DAG size of input: 220 DAG size of output: 220 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:58:13,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:58:15,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:58:17,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:58:39,139 WARN L233 SmtUtils]: Spent 14.57s on a formula simplification. DAG size of input: 209 DAG size of output: 209 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:58:41,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:58:43,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:58:45,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:58:54,442 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 203 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:59:11,487 WARN L233 SmtUtils]: Spent 15.29s on a formula simplification. DAG size of input: 198 DAG size of output: 198 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:59:13,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:59:15,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:59:38,153 WARN L233 SmtUtils]: Spent 15.24s on a formula simplification. DAG size of input: 187 DAG size of output: 187 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:59:40,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:59:42,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:00:01,799 WARN L233 SmtUtils]: Spent 13.29s on a formula simplification. DAG size of input: 177 DAG size of output: 177 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 18:00:04,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:00:06,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:00:23,992 WARN L233 SmtUtils]: Spent 11.53s on a formula simplification. DAG size of input: 166 DAG size of output: 166 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 18:00:26,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:00:28,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:00:44,386 WARN L233 SmtUtils]: Spent 9.49s on a formula simplification. DAG size of input: 155 DAG size of output: 155 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 18:00:46,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:00:48,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:01:00,997 WARN L233 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 144 DAG size of output: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 18:01:03,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:01:05,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:01:16,391 WARN L233 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 134 DAG size of output: 134 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 18:01:18,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:01:20,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:01:33,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:01:35,069 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 [] [2022-12-13 18:02:11,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:02:11,666 INFO L93 Difference]: Finished difference Result 10099 states and 11527 transitions. [2022-12-13 18:02:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-12-13 18:02:11,668 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.263157894736842) internal successors, (186), 58 states have internal predecessors, (186), 0 states have call successors, (0), 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 94 [2022-12-13 18:02:11,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:02:11,681 INFO L225 Difference]: With dead ends: 10099 [2022-12-13 18:02:11,681 INFO L226 Difference]: Without dead ends: 10099 [2022-12-13 18:02:11,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4087 ImplicationChecksByTransitivity, 358.9s TimeCoverageRelationStatistics Valid=4684, Invalid=10568, Unknown=0, NotChecked=0, Total=15252 [2022-12-13 18:02:11,683 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 9943 mSDsluCounter, 4533 mSDsCounter, 0 mSdLazyCounter, 6008 mSolverCounterSat, 64 mSolverCounterUnsat, 30 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9943 SdHoareTripleChecker+Valid, 4713 SdHoareTripleChecker+Invalid, 6102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 6008 IncrementalHoareTripleChecker+Invalid, 30 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:02:11,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9943 Valid, 4713 Invalid, 6102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 6008 Invalid, 30 Unknown, 0 Unchecked, 78.7s Time] [2022-12-13 18:02:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10099 states. [2022-12-13 18:02:11,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10099 to 1186. [2022-12-13 18:02:11,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1184 states have (on average 1.1587837837837838) internal successors, (1372), 1185 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:02:11,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1372 transitions. [2022-12-13 18:02:11,720 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1372 transitions. Word has length 94 [2022-12-13 18:02:11,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:02:11,721 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1372 transitions. [2022-12-13 18:02:11,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.263157894736842) internal successors, (186), 58 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:02:11,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1372 transitions. [2022-12-13 18:02:11,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 18:02:11,722 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:02:11,722 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:02:11,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 (34)] Ended with exit code 0 [2022-12-13 18:02:11,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 18:02:11,924 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:02:11,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:02:11,925 INFO L85 PathProgramCache]: Analyzing trace with hash 647922256, now seen corresponding path program 10 times [2022-12-13 18:02:11,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:02:11,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435349878] [2022-12-13 18:02:11,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:02:11,927 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 [2022-12-13 18:02:11,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:02:11,929 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 18:02:11,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 (35)] Waiting until timeout for monitored process [2022-12-13 18:02:12,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:02:12,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:02:12,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 18:02:12,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:02:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 188 proven. 100 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-12-13 18:02:12,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:02:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 209 proven. 79 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-12-13 18:02:13,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:02:13,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435349878] [2022-12-13 18:02:13,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435349878] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:02:13,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:02:13,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2022-12-13 18:02:13,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618067319] [2022-12-13 18:02:13,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:02:13,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 18:02:13,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:02:13,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 18:02:13,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2022-12-13 18:02:13,864 INFO L87 Difference]: Start difference. First operand 1186 states and 1372 transitions. Second operand has 30 states, 30 states have (on average 3.7) internal successors, (111), 30 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) [2022-12-13 18:02:16,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:02:16,170 INFO L93 Difference]: Finished difference Result 1187 states and 1368 transitions. [2022-12-13 18:02:16,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 18:02:16,171 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.7) internal successors, (111), 30 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) Word has length 100 [2022-12-13 18:02:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:02:16,173 INFO L225 Difference]: With dead ends: 1187 [2022-12-13 18:02:16,173 INFO L226 Difference]: Without dead ends: 1187 [2022-12-13 18:02:16,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=340, Invalid=1382, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 18:02:16,173 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 637 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:02:16,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 354 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 18:02:16,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2022-12-13 18:02:16,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1186. [2022-12-13 18:02:16,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1184 states have (on average 1.1554054054054055) internal successors, (1368), 1185 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:02:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1368 transitions. [2022-12-13 18:02:16,184 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1368 transitions. Word has length 100 [2022-12-13 18:02:16,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:02:16,184 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1368 transitions. [2022-12-13 18:02:16,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.7) internal successors, (111), 30 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) [2022-12-13 18:02:16,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1368 transitions. [2022-12-13 18:02:16,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 18:02:16,186 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:02:16,186 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:02:16,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 (35)] Ended with exit code 0 [2022-12-13 18:02:16,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 18:02:16,387 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:02:16,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:02:16,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1128326153, now seen corresponding path program 7 times [2022-12-13 18:02:16,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:02:16,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293274470] [2022-12-13 18:02:16,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 18:02:16,388 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 [2022-12-13 18:02:16,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:02:16,389 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 18:02:16,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 (36)] Waiting until timeout for monitored process [2022-12-13 18:02:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:02:16,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 18:02:16,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:02:16,564 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 [2022-12-13 18:02:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 53 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:02:18,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:02:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 461 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:02:30,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:02:30,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293274470] [2022-12-13 18:02:30,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293274470] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:02:30,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:02:30,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28] total 54 [2022-12-13 18:02:30,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747494678] [2022-12-13 18:02:30,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:02:30,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-13 18:02:30,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:02:30,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-13 18:02:30,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=2512, Unknown=0, NotChecked=0, Total=2862 [2022-12-13 18:02:30,340 INFO L87 Difference]: Start difference. First operand 1186 states and 1368 transitions. Second operand has 54 states, 54 states have (on average 3.7037037037037037) internal successors, (200), 54 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:01,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:03:25,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:25,709 INFO L93 Difference]: Finished difference Result 2627 states and 2978 transitions. [2022-12-13 18:03:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-12-13 18:03:25,711 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.7037037037037037) internal successors, (200), 54 states have internal predecessors, (200), 0 states have call successors, (0), 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 101 [2022-12-13 18:03:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:25,714 INFO L225 Difference]: With dead ends: 2627 [2022-12-13 18:03:25,714 INFO L226 Difference]: Without dead ends: 2625 [2022-12-13 18:03:25,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8684 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=5432, Invalid=26788, Unknown=0, NotChecked=0, Total=32220 [2022-12-13 18:03:25,717 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 5517 mSDsluCounter, 4730 mSDsCounter, 0 mSdLazyCounter, 10277 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5517 SdHoareTripleChecker+Valid, 4975 SdHoareTripleChecker+Invalid, 10455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 10277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:25,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5517 Valid, 4975 Invalid, 10455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 10277 Invalid, 0 Unknown, 0 Unchecked, 20.5s Time] [2022-12-13 18:03:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2022-12-13 18:03:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2108. [2022-12-13 18:03:25,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2106 states have (on average 1.154320987654321) internal successors, (2431), 2107 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:25,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 2431 transitions. [2022-12-13 18:03:25,738 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 2431 transitions. Word has length 101 [2022-12-13 18:03:25,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:25,738 INFO L495 AbstractCegarLoop]: Abstraction has 2108 states and 2431 transitions. [2022-12-13 18:03:25,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.7037037037037037) internal successors, (200), 54 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:25,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 2431 transitions. [2022-12-13 18:03:25,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 18:03:25,740 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:25,740 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:03:25,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 (36)] Ended with exit code 0 [2022-12-13 18:03:25,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 18:03:25,941 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:03:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:25,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1315290911, now seen corresponding path program 8 times [2022-12-13 18:03:25,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:03:25,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467670017] [2022-12-13 18:03:25,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:03:25,944 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 [2022-12-13 18:03:25,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:03:25,947 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 18:03:25,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 (37)] Waiting until timeout for monitored process [2022-12-13 18:03:26,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:03:26,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:03:26,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 18:03:26,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:26,176 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 [2022-12-13 18:03:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-12-13 18:03:28,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:03:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-12-13 18:03:35,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:03:35,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467670017] [2022-12-13 18:03:35,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467670017] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:03:35,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:03:35,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2022-12-13 18:03:35,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248695652] [2022-12-13 18:03:35,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:03:35,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 18:03:35,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:03:35,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 18:03:35,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=939, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 18:03:35,967 INFO L87 Difference]: Start difference. First operand 2108 states and 2431 transitions. Second operand has 35 states, 34 states have (on average 3.7058823529411766) internal successors, (126), 35 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:00,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:06:02,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:06:02,428 INFO L93 Difference]: Finished difference Result 2747 states and 3168 transitions. [2022-12-13 18:06:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-12-13 18:06:02,430 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.7058823529411766) internal successors, (126), 35 states have internal predecessors, (126), 0 states have call successors, (0), 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 104 [2022-12-13 18:06:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:06:02,434 INFO L225 Difference]: With dead ends: 2747 [2022-12-13 18:06:02,434 INFO L226 Difference]: Without dead ends: 2747 [2022-12-13 18:06:02,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6328 ImplicationChecksByTransitivity, 127.7s TimeCoverageRelationStatistics Valid=4500, Invalid=13587, Unknown=3, NotChecked=0, Total=18090 [2022-12-13 18:06:02,437 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 1319 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 2736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:06:02,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 1074 Invalid, 2736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time] [2022-12-13 18:06:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2022-12-13 18:06:02,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2526. [2022-12-13 18:06:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2526 states, 2524 states have (on average 1.1600633914421552) internal successors, (2928), 2525 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:02,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2526 states to 2526 states and 2928 transitions. [2022-12-13 18:06:02,457 INFO L78 Accepts]: Start accepts. Automaton has 2526 states and 2928 transitions. Word has length 104 [2022-12-13 18:06:02,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:06:02,458 INFO L495 AbstractCegarLoop]: Abstraction has 2526 states and 2928 transitions. [2022-12-13 18:06:02,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.7058823529411766) internal successors, (126), 35 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:02,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2526 states and 2928 transitions. [2022-12-13 18:06:02,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 18:06:02,463 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:06:02,463 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:06:02,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 (37)] Ended with exit code 0 [2022-12-13 18:06:02,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 18:06:02,665 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:06:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:02,666 INFO L85 PathProgramCache]: Analyzing trace with hash -536246752, now seen corresponding path program 11 times [2022-12-13 18:06:02,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:06:02,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549383760] [2022-12-13 18:06:02,668 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 18:06:02,668 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 [2022-12-13 18:06:02,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:06:02,671 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 18:06:02,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8856f58f-ea92-4e50-adf9-86befbe29e9a/bin/uautomizer-uyxdKDjOR8/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 (38)] Waiting until timeout for monitored process [2022-12-13 18:06:04,397 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-12-13 18:06:04,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:06:04,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 18:06:04,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:06:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 139 proven. 321 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-13 18:06:05,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:06:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 181 proven. 279 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-13 18:06:07,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:06:07,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549383760] [2022-12-13 18:06:07,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549383760] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:06:07,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:06:07,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2022-12-13 18:06:07,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110013173] [2022-12-13 18:06:07,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:06:07,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-13 18:06:07,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:06:07,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-13 18:06:07,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 18:06:07,614 INFO L87 Difference]: Start difference. First operand 2526 states and 2928 transitions. Second operand has 40 states, 40 states have (on average 3.8) internal successors, (152), 40 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)