./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro --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 9a1ebdea5e08fe7fb177f9715317eb0e1f1a80d35c0ea62e77ce19d6486e2cb1 --- 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-8393723 [2022-11-18 18:34:40,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:34:40,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:34:40,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:34:40,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:34:40,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:34:40,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:34:40,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:34:40,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:34:40,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:34:40,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:34:40,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:34:40,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:34:40,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:34:40,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:34:40,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:34:40,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:34:40,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:34:40,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:34:40,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:34:40,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:34:40,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:34:40,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:34:40,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:34:40,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:34:40,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:34:40,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:34:40,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:34:40,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:34:40,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:34:40,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:34:40,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:34:40,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:34:40,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:34:40,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:34:40,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:34:40,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:34:40,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:34:40,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:34:40,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:34:40,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:34:40,493 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 18:34:40,533 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:34:40,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:34:40,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:34:40,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:34:40,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:34:40,536 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:34:40,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:34:40,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:34:40,537 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:34:40,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:34:40,539 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:34:40,539 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:34:40,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:34:40,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:34:40,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:34:40,540 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 18:34:40,540 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 18:34:40,540 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 18:34:40,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:34:40,541 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:34:40,541 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:34:40,541 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:34:40,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:34:40,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:34:40,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:34:40,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:34:40,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:34:40,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:34:40,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:34:40,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:34:40,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a1ebdea5e08fe7fb177f9715317eb0e1f1a80d35c0ea62e77ce19d6486e2cb1 [2022-11-18 18:34:40,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:34:40,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:34:40,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:34:40,875 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:34:40,876 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:34:40,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2022-11-18 18:34:40,944 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/data/aa25ca182/a945d67809a1420f8fc4d39d18b19506/FLAG2739ce433 [2022-11-18 18:34:41,600 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:34:41,601 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2022-11-18 18:34:41,611 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/data/aa25ca182/a945d67809a1420f8fc4d39d18b19506/FLAG2739ce433 [2022-11-18 18:34:41,922 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/data/aa25ca182/a945d67809a1420f8fc4d39d18b19506 [2022-11-18 18:34:41,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:34:41,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:34:41,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:34:41,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:34:41,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:34:41,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:34:41" (1/1) ... [2022-11-18 18:34:41,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee3b54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:41, skipping insertion in model container [2022-11-18 18:34:41,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:34:41" (1/1) ... [2022-11-18 18:34:41,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:34:41,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:34:42,256 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3424,3437] [2022-11-18 18:34:42,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:34:42,293 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-18 18:34:42,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@41fd9b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:42, skipping insertion in model container [2022-11-18 18:34:42,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:34:42,296 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 18:34:42,299 INFO L158 Benchmark]: Toolchain (without parser) took 371.27ms. Allocated memory is still 123.7MB. Free memory was 85.3MB in the beginning and 98.9MB in the end (delta: -13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 18:34:42,302 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 123.7MB. Free memory was 102.6MB in the beginning and 102.5MB in the end (delta: 78.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:34:42,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.30ms. Allocated memory is still 123.7MB. Free memory was 85.1MB in the beginning and 98.9MB in the end (delta: -13.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:34:42,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 123.7MB. Free memory was 102.6MB in the beginning and 102.5MB in the end (delta: 78.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.30ms. Allocated memory is still 123.7MB. Free memory was 85.1MB in the beginning and 98.9MB in the end (delta: -13.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 136]: 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_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro --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 9a1ebdea5e08fe7fb177f9715317eb0e1f1a80d35c0ea62e77ce19d6486e2cb1 --- 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-8393723 [2022-11-18 18:34:44,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:34:44,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:34:44,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:34:44,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:34:44,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:34:44,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:34:44,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:34:44,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:34:44,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:34:44,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:34:44,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:34:44,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:34:44,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:34:44,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:34:44,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:34:44,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:34:44,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:34:44,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:34:44,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:34:44,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:34:44,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:34:44,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:34:44,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:34:44,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:34:44,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:34:44,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:34:44,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:34:44,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:34:44,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:34:44,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:34:44,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:34:44,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:34:44,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:34:44,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:34:44,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:34:44,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:34:44,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:34:44,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:34:44,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:34:44,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:34:44,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 18:34:44,667 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:34:44,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:34:44,689 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:34:44,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:34:44,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:34:44,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:34:44,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:34:44,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:34:44,693 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:34:44,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:34:44,694 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:34:44,695 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:34:44,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:34:44,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:34:44,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:34:44,696 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 18:34:44,696 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 18:34:44,696 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 18:34:44,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:34:44,696 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:34:44,697 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 18:34:44,697 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 18:34:44,697 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:34:44,697 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:34:44,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:34:44,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:34:44,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:34:44,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:34:44,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:34:44,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:34:44,699 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 18:34:44,699 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 18:34:44,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 18:34:44,700 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a1ebdea5e08fe7fb177f9715317eb0e1f1a80d35c0ea62e77ce19d6486e2cb1 [2022-11-18 18:34:45,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:34:45,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:34:45,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:34:45,088 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:34:45,090 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:34:45,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2022-11-18 18:34:45,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/data/8dc654d4d/9c6cc14706e74a79b4dd259937bdf787/FLAGaebcce261 [2022-11-18 18:34:45,812 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:34:45,818 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2022-11-18 18:34:45,828 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/data/8dc654d4d/9c6cc14706e74a79b4dd259937bdf787/FLAGaebcce261 [2022-11-18 18:34:46,155 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/data/8dc654d4d/9c6cc14706e74a79b4dd259937bdf787 [2022-11-18 18:34:46,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:34:46,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:34:46,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:34:46,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:34:46,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:34:46,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:34:46" (1/1) ... [2022-11-18 18:34:46,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e7d1ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46, skipping insertion in model container [2022-11-18 18:34:46,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:34:46" (1/1) ... [2022-11-18 18:34:46,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:34:46,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:34:46,562 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3424,3437] [2022-11-18 18:34:46,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:34:46,588 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 18:34:46,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:34:46,640 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3424,3437] [2022-11-18 18:34:46,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:34:46,649 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:34:46,673 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3424,3437] [2022-11-18 18:34:46,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:34:46,694 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:34:46,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46 WrapperNode [2022-11-18 18:34:46,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:34:46,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:34:46,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:34:46,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:34:46,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46" (1/1) ... [2022-11-18 18:34:46,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46" (1/1) ... [2022-11-18 18:34:46,755 INFO L138 Inliner]: procedures = 27, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 238 [2022-11-18 18:34:46,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:34:46,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:34:46,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:34:46,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:34:46,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46" (1/1) ... [2022-11-18 18:34:46,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46" (1/1) ... [2022-11-18 18:34:46,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46" (1/1) ... [2022-11-18 18:34:46,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46" (1/1) ... [2022-11-18 18:34:46,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46" (1/1) ... [2022-11-18 18:34:46,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46" (1/1) ... [2022-11-18 18:34:46,822 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46" (1/1) ... [2022-11-18 18:34:46,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46" (1/1) ... [2022-11-18 18:34:46,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:34:46,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:34:46,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:34:46,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:34:46,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46" (1/1) ... [2022-11-18 18:34:46,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:34:46,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:46,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:34:46,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:34:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:34:46,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 18:34:46,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:34:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 18:34:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:34:46,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:34:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:34:46,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:34:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:34:46,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:34:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:34:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:34:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:34:46,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:34:46,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:34:46,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:34:46,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 18:34:46,934 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:34:47,078 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:34:47,080 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:34:47,941 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:34:48,238 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:34:48,239 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 18:34:48,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:34:48 BoogieIcfgContainer [2022-11-18 18:34:48,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:34:48,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:34:48,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:34:48,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:34:48,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:34:46" (1/3) ... [2022-11-18 18:34:48,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f02afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:34:48, skipping insertion in model container [2022-11-18 18:34:48,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:46" (2/3) ... [2022-11-18 18:34:48,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f02afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:34:48, skipping insertion in model container [2022-11-18 18:34:48,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:34:48" (3/3) ... [2022-11-18 18:34:48,257 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2022-11-18 18:34:48,279 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:34:48,280 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-18 18:34:48,280 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:34:48,411 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:34:48,467 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 18:34:48,486 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 234 transitions, 492 flow [2022-11-18 18:34:48,491 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 234 transitions, 492 flow [2022-11-18 18:34:48,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 234 transitions, 492 flow [2022-11-18 18:34:48,665 INFO L130 PetriNetUnfolder]: 18/231 cut-off events. [2022-11-18 18:34:48,665 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:34:48,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 231 events. 18/231 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 227 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 182. Up to 3 conditions per place. [2022-11-18 18:34:48,678 INFO L119 LiptonReduction]: Number of co-enabled transitions 2700 [2022-11-18 18:35:30,542 INFO L134 LiptonReduction]: Checked pairs total: 4331 [2022-11-18 18:35:30,542 INFO L136 LiptonReduction]: Total number of compositions: 252 [2022-11-18 18:35:30,551 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 59 transitions, 142 flow [2022-11-18 18:35:30,672 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1565 states, 1237 states have (on average 4.568310428455942) internal successors, (5651), 1564 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:30,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:35:30,702 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@274abab4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:35:30,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-18 18:35:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 1565 states, 1237 states have (on average 4.568310428455942) internal successors, (5651), 1564 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:30,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 18:35:30,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:30,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 18:35:30,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:30,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:30,719 INFO L85 PathProgramCache]: Analyzing trace with hash 34602, now seen corresponding path program 1 times [2022-11-18 18:35:30,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:30,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637976070] [2022-11-18 18:35:30,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:30,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:30,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:30,745 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:30,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 18:35:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:30,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:35:30,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:31,101 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:35:31,102 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:35:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:31,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:31,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:31,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637976070] [2022-11-18 18:35:31,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637976070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:31,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:31,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:35:31,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318042487] [2022-11-18 18:35:31,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:31,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:35:31,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:31,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:35:31,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:31,209 INFO L87 Difference]: Start difference. First operand has 1565 states, 1237 states have (on average 4.568310428455942) internal successors, (5651), 1564 states have internal predecessors, (5651), 0 states have call successors, (0), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:31,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:31,583 INFO L93 Difference]: Finished difference Result 1562 states and 5460 transitions. [2022-11-18 18:35:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:35:31,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-18 18:35:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:31,622 INFO L225 Difference]: With dead ends: 1562 [2022-11-18 18:35:31,622 INFO L226 Difference]: Without dead ends: 1562 [2022-11-18 18:35:31,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:31,626 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:31,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:35:31,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-11-18 18:35:31,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1562. [2022-11-18 18:35:31,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1237 states have (on average 4.413904607922393) internal successors, (5460), 1561 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:31,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 5460 transitions. [2022-11-18 18:35:31,795 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 5460 transitions. Word has length 2 [2022-11-18 18:35:31,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:31,796 INFO L495 AbstractCegarLoop]: Abstraction has 1562 states and 5460 transitions. [2022-11-18 18:35:31,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:31,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 5460 transitions. [2022-11-18 18:35:31,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 18:35:31,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:31,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 18:35:31,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:35:32,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:32,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:32,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:32,010 INFO L85 PathProgramCache]: Analyzing trace with hash 34603, now seen corresponding path program 1 times [2022-11-18 18:35:32,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:32,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758380335] [2022-11-18 18:35:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:32,011 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:32,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:32,013 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:32,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 18:35:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:32,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:35:32,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:32,372 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:35:32,372 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:35:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:32,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:32,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:32,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758380335] [2022-11-18 18:35:32,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758380335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:32,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:32,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:35:32,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164353783] [2022-11-18 18:35:32,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:32,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:35:32,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:32,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:35:32,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:32,417 INFO L87 Difference]: Start difference. First operand 1562 states and 5460 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:33,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:33,084 INFO L93 Difference]: Finished difference Result 3121 states and 10917 transitions. [2022-11-18 18:35:33,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:35:33,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-18 18:35:33,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:33,108 INFO L225 Difference]: With dead ends: 3121 [2022-11-18 18:35:33,108 INFO L226 Difference]: Without dead ends: 3121 [2022-11-18 18:35:33,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:33,115 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 45 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:33,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:35:33,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2022-11-18 18:35:33,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 1564. [2022-11-18 18:35:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1239 states have (on average 4.411622276029056) internal successors, (5466), 1563 states have internal predecessors, (5466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:33,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 5466 transitions. [2022-11-18 18:35:33,246 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 5466 transitions. Word has length 2 [2022-11-18 18:35:33,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:33,247 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 5466 transitions. [2022-11-18 18:35:33,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:33,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 5466 transitions. [2022-11-18 18:35:33,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 18:35:33,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:33,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 18:35:33,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:33,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:33,461 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:33,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:33,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1079353, now seen corresponding path program 1 times [2022-11-18 18:35:33,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:33,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103542293] [2022-11-18 18:35:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:33,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:33,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:33,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:33,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 18:35:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:33,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:35:33,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:33,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:33,743 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-18 18:35:33,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-18 18:35:34,399 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 18:35:34,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 18:35:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:34,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:34,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:34,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103542293] [2022-11-18 18:35:34,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103542293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:34,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:34,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:35:34,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966596119] [2022-11-18 18:35:34,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:34,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:35:34,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:34,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:35:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:34,677 INFO L87 Difference]: Start difference. First operand 1564 states and 5466 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:34,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:34,973 INFO L93 Difference]: Finished difference Result 1565 states and 5469 transitions. [2022-11-18 18:35:34,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:35:34,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 18:35:34,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:34,988 INFO L225 Difference]: With dead ends: 1565 [2022-11-18 18:35:34,988 INFO L226 Difference]: Without dead ends: 1565 [2022-11-18 18:35:34,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:34,989 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:34,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 47 Unchecked, 0.3s Time] [2022-11-18 18:35:34,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-11-18 18:35:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2022-11-18 18:35:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1240 states have (on average 4.410483870967742) internal successors, (5469), 1564 states have internal predecessors, (5469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 5469 transitions. [2022-11-18 18:35:35,118 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 5469 transitions. Word has length 3 [2022-11-18 18:35:35,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:35,119 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 5469 transitions. [2022-11-18 18:35:35,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:35,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 5469 transitions. [2022-11-18 18:35:35,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 18:35:35,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:35,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 18:35:35,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:35,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:35,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:35,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:35,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1079354, now seen corresponding path program 1 times [2022-11-18 18:35:35,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:35,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904186862] [2022-11-18 18:35:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:35,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:35,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:35,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:35,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 18:35:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:35,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:35:35,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:35,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:35,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:35,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:35,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:35,644 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 18:35:35,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2022-11-18 18:35:35,684 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-18 18:35:35,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-18 18:35:35,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:35,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:35:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:35,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:35,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:35,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904186862] [2022-11-18 18:35:35,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904186862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:35,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:35,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:35:35,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587700873] [2022-11-18 18:35:35,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:35,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:35,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:35,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:35,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:35,822 INFO L87 Difference]: Start difference. First operand 1565 states and 5469 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:36,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:36,203 INFO L93 Difference]: Finished difference Result 1284 states and 4346 transitions. [2022-11-18 18:35:36,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:35:36,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 18:35:36,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:36,214 INFO L225 Difference]: With dead ends: 1284 [2022-11-18 18:35:36,214 INFO L226 Difference]: Without dead ends: 1284 [2022-11-18 18:35:36,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:36,216 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 94 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:36,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 3 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 1 Unchecked, 0.4s Time] [2022-11-18 18:35:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-11-18 18:35:36,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1284. [2022-11-18 18:35:36,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1035 states have (on average 4.19903381642512) internal successors, (4346), 1283 states have internal predecessors, (4346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 4346 transitions. [2022-11-18 18:35:36,271 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 4346 transitions. Word has length 3 [2022-11-18 18:35:36,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:36,272 INFO L495 AbstractCegarLoop]: Abstraction has 1284 states and 4346 transitions. [2022-11-18 18:35:36,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:36,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 4346 transitions. [2022-11-18 18:35:36,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 18:35:36,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:36,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 18:35:36,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:36,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:36,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:36,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1077319, now seen corresponding path program 1 times [2022-11-18 18:35:36,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:36,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394976550] [2022-11-18 18:35:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:36,487 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 [2022-11-18 18:35:36,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:36,489 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:36,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 18:35:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:36,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:35:36,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:36,759 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:35:36,759 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:35:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:36,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:37,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:37,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394976550] [2022-11-18 18:35:37,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394976550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:35:37,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:35:37,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 18:35:37,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735470332] [2022-11-18 18:35:37,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:35:37,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:37,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:37,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:37,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:37,116 INFO L87 Difference]: Start difference. First operand 1284 states and 4346 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:39,218 INFO L93 Difference]: Finished difference Result 3842 states and 13023 transitions. [2022-11-18 18:35:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 3 [2022-11-18 18:35:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:39,252 INFO L225 Difference]: With dead ends: 3842 [2022-11-18 18:35:39,252 INFO L226 Difference]: Without dead ends: 3842 [2022-11-18 18:35:39,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:35:39,253 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 217 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:39,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 12 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 18:35:39,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2022-11-18 18:35:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 1290. [2022-11-18 18:35:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1041 states have (on average 4.189241114313161) internal successors, (4361), 1289 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:39,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 4361 transitions. [2022-11-18 18:35:39,416 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 4361 transitions. Word has length 3 [2022-11-18 18:35:39,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:39,417 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 4361 transitions. [2022-11-18 18:35:39,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:39,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 4361 transitions. [2022-11-18 18:35:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 18:35:39,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:39,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 18:35:39,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:39,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:39,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:39,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash 33459628, now seen corresponding path program 1 times [2022-11-18 18:35:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:39,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510023709] [2022-11-18 18:35:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:39,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:39,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:39,624 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:39,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 18:35:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:39,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:35:39,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:39,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:39,911 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-18 18:35:39,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-18 18:35:40,393 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 18:35:40,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 18:35:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:40,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:40,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:40,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510023709] [2022-11-18 18:35:40,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510023709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:40,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:40,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:35:40,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072691516] [2022-11-18 18:35:40,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:40,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:35:40,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:40,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:35:40,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:40,534 INFO L87 Difference]: Start difference. First operand 1290 states and 4361 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:40,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:40,814 INFO L93 Difference]: Finished difference Result 1294 states and 4370 transitions. [2022-11-18 18:35:40,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:35:40,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-18 18:35:40,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:40,825 INFO L225 Difference]: With dead ends: 1294 [2022-11-18 18:35:40,825 INFO L226 Difference]: Without dead ends: 1294 [2022-11-18 18:35:40,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:40,826 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:40,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2022-11-18 18:35:40,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-11-18 18:35:40,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1294. [2022-11-18 18:35:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1045 states have (on average 4.181818181818182) internal successors, (4370), 1293 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:40,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 4370 transitions. [2022-11-18 18:35:40,878 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 4370 transitions. Word has length 4 [2022-11-18 18:35:40,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:40,878 INFO L495 AbstractCegarLoop]: Abstraction has 1294 states and 4370 transitions. [2022-11-18 18:35:40,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 4370 transitions. [2022-11-18 18:35:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 18:35:40,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:40,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 18:35:40,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:41,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:41,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:41,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:41,094 INFO L85 PathProgramCache]: Analyzing trace with hash 33403549, now seen corresponding path program 1 times [2022-11-18 18:35:41,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:41,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302038266] [2022-11-18 18:35:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:41,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:41,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:41,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:41,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 18:35:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:41,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:35:41,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:41,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:41,333 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-18 18:35:41,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-18 18:35:41,463 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:35:41,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:35:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:41,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:41,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:41,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302038266] [2022-11-18 18:35:41,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302038266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:41,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:41,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:35:41,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434706864] [2022-11-18 18:35:41,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:41,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:35:41,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:41,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:35:41,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:41,479 INFO L87 Difference]: Start difference. First operand 1294 states and 4370 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:41,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:41,738 INFO L93 Difference]: Finished difference Result 1294 states and 4369 transitions. [2022-11-18 18:35:41,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:35:41,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-18 18:35:41,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:41,747 INFO L225 Difference]: With dead ends: 1294 [2022-11-18 18:35:41,747 INFO L226 Difference]: Without dead ends: 1294 [2022-11-18 18:35:41,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:41,748 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:41,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 45 Unchecked, 0.2s Time] [2022-11-18 18:35:41,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-11-18 18:35:41,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1294. [2022-11-18 18:35:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1045 states have (on average 4.180861244019138) internal successors, (4369), 1293 states have internal predecessors, (4369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 4369 transitions. [2022-11-18 18:35:41,792 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 4369 transitions. Word has length 4 [2022-11-18 18:35:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:41,792 INFO L495 AbstractCegarLoop]: Abstraction has 1294 states and 4369 transitions. [2022-11-18 18:35:41,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 4369 transitions. [2022-11-18 18:35:41,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 18:35:41,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:41,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 18:35:41,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:35:42,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:42,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:42,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:42,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1037283060, now seen corresponding path program 1 times [2022-11-18 18:35:42,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:42,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986780792] [2022-11-18 18:35:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:42,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:42,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:42,007 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:42,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 18:35:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:42,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:35:42,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:42,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:42,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:42,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:42,239 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 18:35:42,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-18 18:35:42,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-18 18:35:42,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:42,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:35:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:42,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:42,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:42,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986780792] [2022-11-18 18:35:42,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986780792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:42,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:42,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:35:42,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634487571] [2022-11-18 18:35:42,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:42,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:42,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:42,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:42,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:42,419 INFO L87 Difference]: Start difference. First operand 1294 states and 4369 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:42,781 INFO L93 Difference]: Finished difference Result 1247 states and 4235 transitions. [2022-11-18 18:35:42,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:35:42,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 18:35:42,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:42,794 INFO L225 Difference]: With dead ends: 1247 [2022-11-18 18:35:42,794 INFO L226 Difference]: Without dead ends: 1247 [2022-11-18 18:35:42,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:42,795 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:42,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 1 Unchecked, 0.3s Time] [2022-11-18 18:35:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-11-18 18:35:42,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1247. [2022-11-18 18:35:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1018 states have (on average 4.160117878192534) internal successors, (4235), 1246 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:42,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 4235 transitions. [2022-11-18 18:35:42,846 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 4235 transitions. Word has length 5 [2022-11-18 18:35:42,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:42,846 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 4235 transitions. [2022-11-18 18:35:42,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 4235 transitions. [2022-11-18 18:35:42,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 18:35:42,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:42,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 18:35:42,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:43,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:43,067 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:43,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:43,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1037283061, now seen corresponding path program 1 times [2022-11-18 18:35:43,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:43,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323286729] [2022-11-18 18:35:43,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:43,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:43,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:43,068 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:43,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 18:35:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:43,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:35:43,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:43,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:43,291 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-18 18:35:43,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2022-11-18 18:35:43,673 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-18 18:35:43,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 18:35:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:43,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:43,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:43,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323286729] [2022-11-18 18:35:43,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323286729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:43,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:43,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:35:43,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503967508] [2022-11-18 18:35:43,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:43,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:35:43,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:43,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:35:43,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:43,828 INFO L87 Difference]: Start difference. First operand 1247 states and 4235 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:44,038 INFO L93 Difference]: Finished difference Result 1250 states and 4245 transitions. [2022-11-18 18:35:44,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:35:44,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 18:35:44,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:44,047 INFO L225 Difference]: With dead ends: 1250 [2022-11-18 18:35:44,047 INFO L226 Difference]: Without dead ends: 1250 [2022-11-18 18:35:44,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:44,048 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:44,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 43 Unchecked, 0.2s Time] [2022-11-18 18:35:44,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-11-18 18:35:44,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2022-11-18 18:35:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1021 states have (on average 4.157688540646425) internal successors, (4245), 1249 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4245 transitions. [2022-11-18 18:35:44,089 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4245 transitions. Word has length 5 [2022-11-18 18:35:44,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:44,089 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 4245 transitions. [2022-11-18 18:35:44,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:44,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4245 transitions. [2022-11-18 18:35:44,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 18:35:44,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:44,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 18:35:44,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:44,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:44,304 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:44,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1035509704, now seen corresponding path program 1 times [2022-11-18 18:35:44,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:44,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601714499] [2022-11-18 18:35:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:44,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:44,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:44,306 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:44,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 18:35:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:44,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:35:44,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:44,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:44,609 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-18 18:35:44,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-18 18:35:45,087 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 18:35:45,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 18:35:45,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:35:45,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:45,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:45,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601714499] [2022-11-18 18:35:45,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601714499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:45,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:45,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:35:45,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079797079] [2022-11-18 18:35:45,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:45,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:35:45,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:45,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:35:45,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:45,186 INFO L87 Difference]: Start difference. First operand 1250 states and 4245 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:45,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:45,411 INFO L93 Difference]: Finished difference Result 1249 states and 4241 transitions. [2022-11-18 18:35:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:35:45,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 18:35:45,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:45,418 INFO L225 Difference]: With dead ends: 1249 [2022-11-18 18:35:45,418 INFO L226 Difference]: Without dead ends: 1249 [2022-11-18 18:35:45,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:45,419 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:45,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 42 Unchecked, 0.2s Time] [2022-11-18 18:35:45,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-11-18 18:35:45,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1245. [2022-11-18 18:35:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1017 states have (on average 4.16125860373648) internal successors, (4232), 1244 states have internal predecessors, (4232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:45,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 4232 transitions. [2022-11-18 18:35:45,457 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 4232 transitions. Word has length 5 [2022-11-18 18:35:45,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:45,457 INFO L495 AbstractCegarLoop]: Abstraction has 1245 states and 4232 transitions. [2022-11-18 18:35:45,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:45,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 4232 transitions. [2022-11-18 18:35:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 18:35:45,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:45,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 18:35:45,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:45,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:45,670 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:45,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2090997544, now seen corresponding path program 1 times [2022-11-18 18:35:45,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:45,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740547020] [2022-11-18 18:35:45,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:45,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:45,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:45,673 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:45,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 18:35:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:45,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:35:45,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:45,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:45,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:45,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740547020] [2022-11-18 18:35:45,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740547020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:45,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:45,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:35:45,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692994933] [2022-11-18 18:35:45,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:45,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:45,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:45,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:45,845 INFO L87 Difference]: Start difference. First operand 1245 states and 4232 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:46,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:46,444 INFO L93 Difference]: Finished difference Result 1333 states and 4437 transitions. [2022-11-18 18:35:46,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:35:46,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 18:35:46,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:46,452 INFO L225 Difference]: With dead ends: 1333 [2022-11-18 18:35:46,452 INFO L226 Difference]: Without dead ends: 1329 [2022-11-18 18:35:46,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:46,453 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 17 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:46,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 9 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:35:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2022-11-18 18:35:46,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1328. [2022-11-18 18:35:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1092 states have (on average 4.052197802197802) internal successors, (4425), 1327 states have internal predecessors, (4425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 4425 transitions. [2022-11-18 18:35:46,502 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 4425 transitions. Word has length 6 [2022-11-18 18:35:46,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:46,503 INFO L495 AbstractCegarLoop]: Abstraction has 1328 states and 4425 transitions. [2022-11-18 18:35:46,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:46,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 4425 transitions. [2022-11-18 18:35:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 18:35:46,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:46,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 18:35:46,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:46,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:46,728 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:46,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2089956264, now seen corresponding path program 1 times [2022-11-18 18:35:46,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:46,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129996259] [2022-11-18 18:35:46,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:46,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:46,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:46,730 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:46,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 18:35:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:46,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:35:46,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:46,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:47,003 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-18 18:35:47,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2022-11-18 18:35:47,360 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-18 18:35:47,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 18:35:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:47,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:47,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:47,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129996259] [2022-11-18 18:35:47,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129996259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:47,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:47,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:35:47,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284753665] [2022-11-18 18:35:47,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:47,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:35:47,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:47,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:35:47,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:47,550 INFO L87 Difference]: Start difference. First operand 1328 states and 4425 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:47,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:47,793 INFO L93 Difference]: Finished difference Result 1326 states and 4422 transitions. [2022-11-18 18:35:47,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:35:47,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 18:35:47,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:47,801 INFO L225 Difference]: With dead ends: 1326 [2022-11-18 18:35:47,801 INFO L226 Difference]: Without dead ends: 1326 [2022-11-18 18:35:47,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:47,802 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:47,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 42 Unchecked, 0.2s Time] [2022-11-18 18:35:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2022-11-18 18:35:47,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1323. [2022-11-18 18:35:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1088 states have (on average 4.060661764705882) internal successors, (4418), 1322 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4418 transitions. [2022-11-18 18:35:47,845 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4418 transitions. Word has length 6 [2022-11-18 18:35:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:47,846 INFO L495 AbstractCegarLoop]: Abstraction has 1323 states and 4418 transitions. [2022-11-18 18:35:47,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4418 transitions. [2022-11-18 18:35:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 18:35:47,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:47,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 18:35:47,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:48,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:48,060 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:48,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:48,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2036064345, now seen corresponding path program 1 times [2022-11-18 18:35:48,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:48,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561607074] [2022-11-18 18:35:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:48,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:48,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:48,063 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:48,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 18:35:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:48,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:35:48,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:48,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:48,323 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-18 18:35:48,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2022-11-18 18:35:48,677 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-18 18:35:48,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 18:35:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:48,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:48,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:48,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561607074] [2022-11-18 18:35:48,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561607074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:48,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:48,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:35:48,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706618256] [2022-11-18 18:35:48,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:48,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:35:48,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:48,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:35:48,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:48,822 INFO L87 Difference]: Start difference. First operand 1323 states and 4418 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:48,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:48,987 INFO L93 Difference]: Finished difference Result 1329 states and 4432 transitions. [2022-11-18 18:35:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:35:48,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 18:35:48,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:48,995 INFO L225 Difference]: With dead ends: 1329 [2022-11-18 18:35:48,995 INFO L226 Difference]: Without dead ends: 1329 [2022-11-18 18:35:48,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:48,996 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:48,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 42 Unchecked, 0.2s Time] [2022-11-18 18:35:49,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2022-11-18 18:35:49,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1326. [2022-11-18 18:35:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1091 states have (on average 4.058661778185151) internal successors, (4428), 1325 states have internal predecessors, (4428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 4428 transitions. [2022-11-18 18:35:49,036 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 4428 transitions. Word has length 6 [2022-11-18 18:35:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:49,036 INFO L495 AbstractCegarLoop]: Abstraction has 1326 states and 4428 transitions. [2022-11-18 18:35:49,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 4428 transitions. [2022-11-18 18:35:49,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 18:35:49,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:49,038 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-18 18:35:49,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:49,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:49,249 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:35:49,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:49,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2034232875, now seen corresponding path program 2 times [2022-11-18 18:35:49,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:49,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676466323] [2022-11-18 18:35:49,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:35:49,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:49,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:49,252 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:49,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 18:35:49,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:35:49,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:49,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:35:49,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:49,521 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:35:49,522 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:35:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:49,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:50,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:50,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676466323] [2022-11-18 18:35:50,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676466323] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:35:50,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:35:50,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-18 18:35:50,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000139299] [2022-11-18 18:35:50,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:35:50,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:35:50,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:50,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:35:50,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:35:50,546 INFO L87 Difference]: Start difference. First operand 1326 states and 4428 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:53,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:35:55,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:35:57,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:35:59,437 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 [] [2022-11-18 18:36:03,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:03,456 INFO L93 Difference]: Finished difference Result 9165 states and 30751 transitions. [2022-11-18 18:36:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:36:03,457 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 18:36:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:03,551 INFO L225 Difference]: With dead ends: 9165 [2022-11-18 18:36:03,552 INFO L226 Difference]: Without dead ends: 9165 [2022-11-18 18:36:03,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:36:03,553 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 880 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 55 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:03,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 87 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1174 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2022-11-18 18:36:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9165 states. [2022-11-18 18:36:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9165 to 1338. [2022-11-18 18:36:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1103 states have (on average 4.036264732547598) internal successors, (4452), 1337 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:03,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 4452 transitions. [2022-11-18 18:36:03,663 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 4452 transitions. Word has length 6 [2022-11-18 18:36:03,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:03,663 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 4452 transitions. [2022-11-18 18:36:03,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:03,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 4452 transitions. [2022-11-18 18:36:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:36:03,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:03,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:03,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:03,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:03,876 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:03,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash 396635656, now seen corresponding path program 1 times [2022-11-18 18:36:03,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:03,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001108165] [2022-11-18 18:36:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:03,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:03,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:03,879 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:03,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-18 18:36:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:04,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:36:04,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:04,091 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:36:04,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:36:04,129 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:36:04,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:04,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:04,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:04,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001108165] [2022-11-18 18:36:04,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001108165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:04,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:04,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:36:04,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762595234] [2022-11-18 18:36:04,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:04,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:36:04,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:04,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:36:04,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:36:04,153 INFO L87 Difference]: Start difference. First operand 1338 states and 4452 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:04,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:04,390 INFO L93 Difference]: Finished difference Result 1273 states and 4266 transitions. [2022-11-18 18:36:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:36:04,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 18:36:04,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:04,396 INFO L225 Difference]: With dead ends: 1273 [2022-11-18 18:36:04,396 INFO L226 Difference]: Without dead ends: 1273 [2022-11-18 18:36:04,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:36:04,397 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:04,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:36:04,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-11-18 18:36:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1273. [2022-11-18 18:36:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1067 states have (on average 3.9981255857544515) internal successors, (4266), 1272 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 4266 transitions. [2022-11-18 18:36:04,450 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 4266 transitions. Word has length 7 [2022-11-18 18:36:04,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:04,451 INFO L495 AbstractCegarLoop]: Abstraction has 1273 states and 4266 transitions. [2022-11-18 18:36:04,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:04,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 4266 transitions. [2022-11-18 18:36:04,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:36:04,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:04,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:04,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:04,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:04,666 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:04,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash 396635655, now seen corresponding path program 1 times [2022-11-18 18:36:04,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:04,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611257172] [2022-11-18 18:36:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:04,668 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 [2022-11-18 18:36:04,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:04,669 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:04,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-18 18:36:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:04,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:36:04,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:04,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:04,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:04,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:04,936 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 18:36:04,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-18 18:36:04,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:36:04,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:04,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:36:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:05,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:05,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:05,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611257172] [2022-11-18 18:36:05,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611257172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:05,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:05,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:36:05,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918947742] [2022-11-18 18:36:05,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:05,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:36:05,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:05,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:36:05,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:36:05,069 INFO L87 Difference]: Start difference. First operand 1273 states and 4266 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:05,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:05,262 INFO L93 Difference]: Finished difference Result 1288 states and 4320 transitions. [2022-11-18 18:36:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:36:05,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 18:36:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:05,267 INFO L225 Difference]: With dead ends: 1288 [2022-11-18 18:36:05,267 INFO L226 Difference]: Without dead ends: 1288 [2022-11-18 18:36:05,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:05,268 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:05,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2022-11-18 18:36:05,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2022-11-18 18:36:05,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2022-11-18 18:36:05,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1082 states have (on average 3.9926062846580406) internal successors, (4320), 1287 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 4320 transitions. [2022-11-18 18:36:05,308 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 4320 transitions. Word has length 7 [2022-11-18 18:36:05,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:05,309 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 4320 transitions. [2022-11-18 18:36:05,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:05,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 4320 transitions. [2022-11-18 18:36:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:36:05,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:05,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:05,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:05,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:05,523 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:05,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:05,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1306521020, now seen corresponding path program 1 times [2022-11-18 18:36:05,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:05,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414864369] [2022-11-18 18:36:05,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:05,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:05,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:05,525 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:05,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-18 18:36:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:05,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:36:05,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:05,741 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:36:05,742 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:36:05,772 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:36:05,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:05,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:05,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:05,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414864369] [2022-11-18 18:36:05,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414864369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:05,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:05,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:36:05,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333106289] [2022-11-18 18:36:05,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:05,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:36:05,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:05,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:36:05,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:36:05,794 INFO L87 Difference]: Start difference. First operand 1288 states and 4320 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:06,055 INFO L93 Difference]: Finished difference Result 889 states and 2909 transitions. [2022-11-18 18:36:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:36:06,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 18:36:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:06,058 INFO L225 Difference]: With dead ends: 889 [2022-11-18 18:36:06,059 INFO L226 Difference]: Without dead ends: 889 [2022-11-18 18:36:06,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:06,059 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:06,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 3 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:36:06,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-11-18 18:36:06,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 889. [2022-11-18 18:36:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 779 states have (on average 3.7342747111681645) internal successors, (2909), 888 states have internal predecessors, (2909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 2909 transitions. [2022-11-18 18:36:06,096 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 2909 transitions. Word has length 7 [2022-11-18 18:36:06,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:06,097 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 2909 transitions. [2022-11-18 18:36:06,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:06,097 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 2909 transitions. [2022-11-18 18:36:06,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:36:06,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:06,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:06,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:06,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:06,310 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:06,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:06,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1306521019, now seen corresponding path program 1 times [2022-11-18 18:36:06,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:06,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807612317] [2022-11-18 18:36:06,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:06,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:06,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:06,312 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:06,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-18 18:36:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:06,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:36:06,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:06,618 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:36:06,619 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:36:06,769 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:36:06,770 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:36:06,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:06,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:36:06,923 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:36:06,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:36:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:06,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:36:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:09,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:09,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807612317] [2022-11-18 18:36:09,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807612317] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:36:09,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:36:09,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 18:36:09,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422143523] [2022-11-18 18:36:09,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:36:09,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:36:09,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:09,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:36:09,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:36:09,587 INFO L87 Difference]: Start difference. First operand 889 states and 2909 transitions. Second operand has 8 states, 7 states have (on average 2.0) 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) [2022-11-18 18:36:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:10,209 INFO L93 Difference]: Finished difference Result 907 states and 2946 transitions. [2022-11-18 18:36:10,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:36:10,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) 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 7 [2022-11-18 18:36:10,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:10,212 INFO L225 Difference]: With dead ends: 907 [2022-11-18 18:36:10,212 INFO L226 Difference]: Without dead ends: 907 [2022-11-18 18:36:10,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:36:10,213 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:10,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 26 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 129 Unchecked, 0.6s Time] [2022-11-18 18:36:10,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-11-18 18:36:10,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 901. [2022-11-18 18:36:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 791 states have (on average 3.7168141592920354) internal successors, (2940), 900 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 2940 transitions. [2022-11-18 18:36:10,238 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 2940 transitions. Word has length 7 [2022-11-18 18:36:10,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:10,239 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 2940 transitions. [2022-11-18 18:36:10,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) 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) [2022-11-18 18:36:10,239 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 2940 transitions. [2022-11-18 18:36:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:36:10,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:10,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:10,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:10,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:10,452 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:10,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1307562300, now seen corresponding path program 1 times [2022-11-18 18:36:10,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:10,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609299176] [2022-11-18 18:36:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:10,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:10,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:10,454 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:10,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-18 18:36:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:10,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:36:10,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:10,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:10,732 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-18 18:36:10,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2022-11-18 18:36:10,920 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:36:10,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:10,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:10,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:10,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:10,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609299176] [2022-11-18 18:36:10,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609299176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:10,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:10,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:36:10,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641499437] [2022-11-18 18:36:10,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:10,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:36:10,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:10,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:36:10,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:36:10,973 INFO L87 Difference]: Start difference. First operand 901 states and 2940 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:11,149 INFO L93 Difference]: Finished difference Result 901 states and 2943 transitions. [2022-11-18 18:36:11,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:36:11,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 18:36:11,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:11,153 INFO L225 Difference]: With dead ends: 901 [2022-11-18 18:36:11,153 INFO L226 Difference]: Without dead ends: 901 [2022-11-18 18:36:11,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:36:11,154 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:11,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-11-18 18:36:11,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-11-18 18:36:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2022-11-18 18:36:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 791 states have (on average 3.720606826801517) internal successors, (2943), 900 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:11,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 2943 transitions. [2022-11-18 18:36:11,178 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 2943 transitions. Word has length 7 [2022-11-18 18:36:11,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:11,178 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 2943 transitions. [2022-11-18 18:36:11,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:11,178 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 2943 transitions. [2022-11-18 18:36:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:36:11,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:11,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:11,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:11,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:11,397 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:11,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1596698118, now seen corresponding path program 1 times [2022-11-18 18:36:11,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:11,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451547641] [2022-11-18 18:36:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:11,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:11,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:11,399 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:11,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-18 18:36:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:11,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 18:36:11,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:11,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:11,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:11,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:11,687 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 18:36:11,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-18 18:36:11,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:36:11,745 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 18:36:11,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:11,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:36:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:12,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:12,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451547641] [2022-11-18 18:36:12,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451547641] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:36:12,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:36:12,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2022-11-18 18:36:12,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501062591] [2022-11-18 18:36:12,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:36:12,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:36:12,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:12,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:36:12,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:36:12,524 INFO L87 Difference]: Start difference. First operand 901 states and 2943 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2022-11-18 18:36:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:13,214 INFO L93 Difference]: Finished difference Result 1753 states and 5764 transitions. [2022-11-18 18:36:13,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:36:13,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 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 8 [2022-11-18 18:36:13,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:13,220 INFO L225 Difference]: With dead ends: 1753 [2022-11-18 18:36:13,220 INFO L226 Difference]: Without dead ends: 1753 [2022-11-18 18:36:13,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:36:13,221 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 127 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:13,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 26 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 103 Invalid, 0 Unknown, 191 Unchecked, 0.7s Time] [2022-11-18 18:36:13,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2022-11-18 18:36:13,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 943. [2022-11-18 18:36:13,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 836 states have (on average 3.6698564593301435) internal successors, (3068), 942 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 3068 transitions. [2022-11-18 18:36:13,258 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 3068 transitions. Word has length 8 [2022-11-18 18:36:13,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:13,258 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 3068 transitions. [2022-11-18 18:36:13,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2022-11-18 18:36:13,259 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 3068 transitions. [2022-11-18 18:36:13,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:36:13,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:13,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:13,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:13,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:13,472 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:13,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:13,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1847444006, now seen corresponding path program 1 times [2022-11-18 18:36:13,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:13,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333432183] [2022-11-18 18:36:13,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:13,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:13,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:13,474 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:13,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-18 18:36:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:13,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:36:13,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:13,729 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:13,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 52 [2022-11-18 18:36:13,981 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2022-11-18 18:36:13,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 68 [2022-11-18 18:36:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:14,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:14,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:14,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333432183] [2022-11-18 18:36:14,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333432183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:14,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:14,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:36:14,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573069466] [2022-11-18 18:36:14,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:14,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:36:14,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:14,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:36:14,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:14,396 INFO L87 Difference]: Start difference. First operand 943 states and 3068 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:14,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:14,588 INFO L93 Difference]: Finished difference Result 951 states and 3077 transitions. [2022-11-18 18:36:14,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:36:14,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 18:36:14,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:14,592 INFO L225 Difference]: With dead ends: 951 [2022-11-18 18:36:14,592 INFO L226 Difference]: Without dead ends: 951 [2022-11-18 18:36:14,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:14,593 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:14,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 9 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 70 Unchecked, 0.2s Time] [2022-11-18 18:36:14,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2022-11-18 18:36:14,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 944. [2022-11-18 18:36:14,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 837 states have (on average 3.6666666666666665) internal successors, (3069), 943 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 3069 transitions. [2022-11-18 18:36:14,617 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 3069 transitions. Word has length 8 [2022-11-18 18:36:14,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:14,618 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 3069 transitions. [2022-11-18 18:36:14,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:14,618 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 3069 transitions. [2022-11-18 18:36:14,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:36:14,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:14,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:14,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:14,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:14,837 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:14,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:14,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1847443913, now seen corresponding path program 1 times [2022-11-18 18:36:14,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:14,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909981983] [2022-11-18 18:36:14,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:14,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:14,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:14,839 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:14,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-18 18:36:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:15,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:36:15,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:15,128 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:15,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 52 [2022-11-18 18:36:15,200 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:15,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:15,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:15,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:15,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909981983] [2022-11-18 18:36:15,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909981983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:15,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:15,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:36:15,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501880783] [2022-11-18 18:36:15,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:15,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:36:15,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:15,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:36:15,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:15,319 INFO L87 Difference]: Start difference. First operand 944 states and 3069 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:15,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:15,573 INFO L93 Difference]: Finished difference Result 903 states and 2945 transitions. [2022-11-18 18:36:15,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:36:15,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 18:36:15,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:15,577 INFO L225 Difference]: With dead ends: 903 [2022-11-18 18:36:15,577 INFO L226 Difference]: Without dead ends: 903 [2022-11-18 18:36:15,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:15,577 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:15,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:36:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-11-18 18:36:15,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 900. [2022-11-18 18:36:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 808 states have (on average 3.631188118811881) internal successors, (2934), 899 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2934 transitions. [2022-11-18 18:36:15,602 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2934 transitions. Word has length 8 [2022-11-18 18:36:15,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:15,603 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 2934 transitions. [2022-11-18 18:36:15,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2934 transitions. [2022-11-18 18:36:15,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:36:15,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:15,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:15,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:36:15,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:15,816 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:15,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:15,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1847444635, now seen corresponding path program 1 times [2022-11-18 18:36:15,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:15,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080527561] [2022-11-18 18:36:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:15,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:15,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:15,818 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:15,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-18 18:36:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:15,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:36:15,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:16,158 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:36:16,158 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:36:16,341 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:36:16,341 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:36:16,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:16,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:36:16,529 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:36:16,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:36:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:16,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:36:24,457 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:36:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:24,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:24,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080527561] [2022-11-18 18:36:24,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080527561] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:36:24,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:36:24,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 18:36:24,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661752791] [2022-11-18 18:36:24,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:36:24,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:36:24,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:24,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:36:24,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:36:24,460 INFO L87 Difference]: Start difference. First operand 900 states and 2934 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2022-11-18 18:36:24,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:24,811 INFO L93 Difference]: Finished difference Result 917 states and 2965 transitions. [2022-11-18 18:36:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:36:24,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 8 [2022-11-18 18:36:24,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:24,815 INFO L225 Difference]: With dead ends: 917 [2022-11-18 18:36:24,815 INFO L226 Difference]: Without dead ends: 917 [2022-11-18 18:36:24,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:36:24,816 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:24,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 20 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 107 Unchecked, 0.3s Time] [2022-11-18 18:36:24,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-11-18 18:36:24,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 906. [2022-11-18 18:36:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 814 states have (on average 3.6265356265356266) internal successors, (2952), 905 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 2952 transitions. [2022-11-18 18:36:24,838 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 2952 transitions. Word has length 8 [2022-11-18 18:36:24,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:24,839 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 2952 transitions. [2022-11-18 18:36:24,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2022-11-18 18:36:24,839 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 2952 transitions. [2022-11-18 18:36:24,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:36:24,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:24,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:24,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-18 18:36:25,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:25,053 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1879731910, now seen corresponding path program 1 times [2022-11-18 18:36:25,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:25,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254695063] [2022-11-18 18:36:25,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:25,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:25,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:25,055 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:25,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-18 18:36:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:25,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 18:36:25,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:25,473 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:36:25,473 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:36:25,605 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 18:36:25,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 18:36:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:25,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:36:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:30,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:30,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254695063] [2022-11-18 18:36:30,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254695063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:36:30,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:36:30,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-18 18:36:30,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119611672] [2022-11-18 18:36:30,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:36:30,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:36:30,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:30,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:36:30,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:36:30,360 INFO L87 Difference]: Start difference. First operand 906 states and 2952 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2022-11-18 18:36:30,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:30,770 INFO L93 Difference]: Finished difference Result 919 states and 2975 transitions. [2022-11-18 18:36:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:36:30,771 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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 8 [2022-11-18 18:36:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:30,775 INFO L225 Difference]: With dead ends: 919 [2022-11-18 18:36:30,775 INFO L226 Difference]: Without dead ends: 919 [2022-11-18 18:36:30,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:36:30,776 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:30,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 199 Unchecked, 0.4s Time] [2022-11-18 18:36:30,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-11-18 18:36:30,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 914. [2022-11-18 18:36:30,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 822 states have (on average 3.6119221411192215) internal successors, (2969), 913 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 2969 transitions. [2022-11-18 18:36:30,803 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 2969 transitions. Word has length 8 [2022-11-18 18:36:30,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:30,804 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 2969 transitions. [2022-11-18 18:36:30,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2022-11-18 18:36:30,804 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 2969 transitions. [2022-11-18 18:36:30,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:36:30,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:30,805 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:30,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:36:31,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:31,019 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:31,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:31,019 INFO L85 PathProgramCache]: Analyzing trace with hash 744585828, now seen corresponding path program 1 times [2022-11-18 18:36:31,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:31,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808726871] [2022-11-18 18:36:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:31,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:31,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:31,021 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:31,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-18 18:36:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:31,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 18:36:31,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:31,362 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:36:31,363 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:36:31,524 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:36:31,524 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:36:31,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:31,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-18 18:36:31,776 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:36:31,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:36:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:31,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:36:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:37,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:37,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808726871] [2022-11-18 18:36:37,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808726871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:36:37,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:36:37,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-18 18:36:37,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885528747] [2022-11-18 18:36:37,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:36:37,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:36:37,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:37,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:36:37,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:36:37,446 INFO L87 Difference]: Start difference. First operand 914 states and 2969 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2022-11-18 18:36:42,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:42,782 INFO L93 Difference]: Finished difference Result 921 states and 2981 transitions. [2022-11-18 18:36:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:36:42,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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 8 [2022-11-18 18:36:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:42,786 INFO L225 Difference]: With dead ends: 921 [2022-11-18 18:36:42,786 INFO L226 Difference]: Without dead ends: 921 [2022-11-18 18:36:42,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:36:42,787 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:42,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 81 Unchecked, 0.6s Time] [2022-11-18 18:36:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-11-18 18:36:42,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 918. [2022-11-18 18:36:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 826 states have (on average 3.6041162227602905) internal successors, (2977), 917 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 2977 transitions. [2022-11-18 18:36:42,807 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 2977 transitions. Word has length 8 [2022-11-18 18:36:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:42,808 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 2977 transitions. [2022-11-18 18:36:42,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2022-11-18 18:36:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 2977 transitions. [2022-11-18 18:36:42,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:36:42,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:42,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:42,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:43,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:43,011 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:43,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:43,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1085200047, now seen corresponding path program 1 times [2022-11-18 18:36:43,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:43,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93106285] [2022-11-18 18:36:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:43,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:43,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:43,013 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:43,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-18 18:36:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:43,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:36:43,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:43,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:43,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:43,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93106285] [2022-11-18 18:36:43,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93106285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:43,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:43,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:36:43,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261409155] [2022-11-18 18:36:43,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:43,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:36:43,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:43,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:36:43,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:36:43,164 INFO L87 Difference]: Start difference. First operand 918 states and 2977 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:43,409 INFO L93 Difference]: Finished difference Result 723 states and 2217 transitions. [2022-11-18 18:36:43,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:36:43,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-18 18:36:43,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:43,411 INFO L225 Difference]: With dead ends: 723 [2022-11-18 18:36:43,411 INFO L226 Difference]: Without dead ends: 719 [2022-11-18 18:36:43,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:36:43,412 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:43,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:36:43,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-11-18 18:36:43,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2022-11-18 18:36:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 666 states have (on average 3.3168168168168166) internal successors, (2209), 718 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 2209 transitions. [2022-11-18 18:36:43,427 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 2209 transitions. Word has length 9 [2022-11-18 18:36:43,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:43,428 INFO L495 AbstractCegarLoop]: Abstraction has 719 states and 2209 transitions. [2022-11-18 18:36:43,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 2209 transitions. [2022-11-18 18:36:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:36:43,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:43,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:43,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:43,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:43,640 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:43,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:43,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1436213499, now seen corresponding path program 1 times [2022-11-18 18:36:43,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:43,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425453224] [2022-11-18 18:36:43,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:43,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:43,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:43,642 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:43,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-18 18:36:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:43,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:36:43,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:44,006 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:36:44,006 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:36:44,174 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:36:44,174 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:36:44,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:44,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:36:44,352 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:36:44,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:36:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:44,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:36:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:48,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:48,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425453224] [2022-11-18 18:36:48,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425453224] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:36:48,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:36:48,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 18:36:48,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942294610] [2022-11-18 18:36:48,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:36:48,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:36:48,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:48,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:36:48,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:36:48,150 INFO L87 Difference]: Start difference. First operand 719 states and 2209 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:48,539 INFO L93 Difference]: Finished difference Result 772 states and 2368 transitions. [2022-11-18 18:36:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:36:48,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 18:36:48,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:48,542 INFO L225 Difference]: With dead ends: 772 [2022-11-18 18:36:48,542 INFO L226 Difference]: Without dead ends: 772 [2022-11-18 18:36:48,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:36:48,543 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:48,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 121 Unchecked, 0.4s Time] [2022-11-18 18:36:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-11-18 18:36:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 757. [2022-11-18 18:36:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 704 states have (on average 3.3338068181818183) internal successors, (2347), 756 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:48,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 2347 transitions. [2022-11-18 18:36:48,561 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 2347 transitions. Word has length 9 [2022-11-18 18:36:48,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:48,561 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 2347 transitions. [2022-11-18 18:36:48,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 2347 transitions. [2022-11-18 18:36:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:36:48,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:48,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:48,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:48,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:48,769 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:48,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:48,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1429398030, now seen corresponding path program 1 times [2022-11-18 18:36:48,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:48,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116665387] [2022-11-18 18:36:48,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:48,770 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:48,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:48,771 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:48,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-18 18:36:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:48,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:36:48,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:48,920 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 [2022-11-18 18:36:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:48,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:48,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:48,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116665387] [2022-11-18 18:36:48,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116665387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:48,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:48,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:36:48,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733034649] [2022-11-18 18:36:48,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:48,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:36:48,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:48,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:36:48,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:36:48,955 INFO L87 Difference]: Start difference. First operand 757 states and 2347 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:49,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:49,248 INFO L93 Difference]: Finished difference Result 591 states and 1790 transitions. [2022-11-18 18:36:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:36:49,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-18 18:36:49,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:49,250 INFO L225 Difference]: With dead ends: 591 [2022-11-18 18:36:49,250 INFO L226 Difference]: Without dead ends: 591 [2022-11-18 18:36:49,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:49,251 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:49,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 3 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:36:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-18 18:36:49,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2022-11-18 18:36:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 560 states have (on average 3.1964285714285716) internal successors, (1790), 590 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1790 transitions. [2022-11-18 18:36:49,262 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1790 transitions. Word has length 9 [2022-11-18 18:36:49,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:49,263 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 1790 transitions. [2022-11-18 18:36:49,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:49,263 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1790 transitions. [2022-11-18 18:36:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:36:49,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:49,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:49,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:49,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:49,465 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:49,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:49,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1429398031, now seen corresponding path program 1 times [2022-11-18 18:36:49,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:49,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878282629] [2022-11-18 18:36:49,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:49,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:49,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:49,474 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:49,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-18 18:36:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:49,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:36:49,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:49,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:49,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:49,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878282629] [2022-11-18 18:36:49,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878282629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:49,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:49,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:36:49,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865551303] [2022-11-18 18:36:49,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:49,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:36:49,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:49,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:36:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:36:49,648 INFO L87 Difference]: Start difference. First operand 591 states and 1790 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:49,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:49,994 INFO L93 Difference]: Finished difference Result 621 states and 1841 transitions. [2022-11-18 18:36:49,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:36:49,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-18 18:36:49,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:49,996 INFO L225 Difference]: With dead ends: 621 [2022-11-18 18:36:49,996 INFO L226 Difference]: Without dead ends: 621 [2022-11-18 18:36:49,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:36:49,997 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:49,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 5 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:36:50,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-11-18 18:36:50,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2022-11-18 18:36:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 584 states have (on average 3.1523972602739727) internal successors, (1841), 620 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:50,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1841 transitions. [2022-11-18 18:36:50,013 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1841 transitions. Word has length 9 [2022-11-18 18:36:50,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:50,013 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 1841 transitions. [2022-11-18 18:36:50,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:50,013 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1841 transitions. [2022-11-18 18:36:50,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:36:50,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:50,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:50,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:50,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:50,214 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:50,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:50,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1857854224, now seen corresponding path program 1 times [2022-11-18 18:36:50,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:50,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460410612] [2022-11-18 18:36:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:50,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:50,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:50,216 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:50,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:36:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:50,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:36:50,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:50,617 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:36:50,617 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:36:50,807 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:36:50,808 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:36:50,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:50,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:36:51,004 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:36:51,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:36:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:51,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:36:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:54,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:54,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460410612] [2022-11-18 18:36:54,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460410612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:36:54,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:36:54,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 18:36:54,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479642295] [2022-11-18 18:36:54,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:36:54,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:36:54,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:54,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:36:54,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:36:54,726 INFO L87 Difference]: Start difference. First operand 621 states and 1841 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:55,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:55,134 INFO L93 Difference]: Finished difference Result 665 states and 1940 transitions. [2022-11-18 18:36:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:36:55,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 18:36:55,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:55,136 INFO L225 Difference]: With dead ends: 665 [2022-11-18 18:36:55,136 INFO L226 Difference]: Without dead ends: 665 [2022-11-18 18:36:55,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:36:55,137 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:55,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 96 Unchecked, 0.4s Time] [2022-11-18 18:36:55,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-11-18 18:36:55,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 651. [2022-11-18 18:36:55,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 614 states have (on average 3.1188925081433223) internal successors, (1915), 650 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:55,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1915 transitions. [2022-11-18 18:36:55,151 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1915 transitions. Word has length 9 [2022-11-18 18:36:55,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:55,151 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1915 transitions. [2022-11-18 18:36:55,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:55,151 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1915 transitions. [2022-11-18 18:36:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:36:55,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:55,152 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:55,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:55,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:55,353 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:36:55,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:55,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1607328261, now seen corresponding path program 1 times [2022-11-18 18:36:55,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:55,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906422384] [2022-11-18 18:36:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:55,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:55,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:55,355 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:55,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:36:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:55,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:36:55,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:55,764 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:36:55,764 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:36:55,957 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:36:55,957 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:36:56,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:56,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-18 18:36:56,215 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:36:56,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:36:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:56,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:03,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:03,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906422384] [2022-11-18 18:37:03,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906422384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:03,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:37:03,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-18 18:37:03,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747901568] [2022-11-18 18:37:03,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:03,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:37:03,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:03,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:37:03,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:37:03,895 INFO L87 Difference]: Start difference. First operand 651 states and 1915 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:09,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:09,254 INFO L93 Difference]: Finished difference Result 658 states and 1930 transitions. [2022-11-18 18:37:09,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:37:09,255 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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 9 [2022-11-18 18:37:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:09,257 INFO L225 Difference]: With dead ends: 658 [2022-11-18 18:37:09,257 INFO L226 Difference]: Without dead ends: 658 [2022-11-18 18:37:09,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:37:09,257 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:09,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 129 Unchecked, 0.6s Time] [2022-11-18 18:37:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-11-18 18:37:09,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 653. [2022-11-18 18:37:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 616 states have (on average 3.1201298701298703) internal successors, (1922), 652 states have internal predecessors, (1922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1922 transitions. [2022-11-18 18:37:09,277 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1922 transitions. Word has length 9 [2022-11-18 18:37:09,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:09,278 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 1922 transitions. [2022-11-18 18:37:09,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:09,278 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1922 transitions. [2022-11-18 18:37:09,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:37:09,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:09,279 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:09,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:09,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:09,481 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:37:09,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:09,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1607327548, now seen corresponding path program 1 times [2022-11-18 18:37:09,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:09,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474936967] [2022-11-18 18:37:09,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:09,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:09,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:09,483 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:09,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:37:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:09,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 18:37:09,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:09,855 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:37:09,855 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:37:10,048 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:37:10,048 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:37:10,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:10,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-18 18:37:10,304 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:37:10,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:37:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:10,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:15,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:15,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474936967] [2022-11-18 18:37:15,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474936967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:15,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:37:15,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-18 18:37:15,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091615538] [2022-11-18 18:37:15,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:15,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:37:15,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:37:15,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:37:15,894 INFO L87 Difference]: Start difference. First operand 653 states and 1922 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:16,629 INFO L93 Difference]: Finished difference Result 660 states and 1934 transitions. [2022-11-18 18:37:16,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:37:16,630 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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 9 [2022-11-18 18:37:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:16,632 INFO L225 Difference]: With dead ends: 660 [2022-11-18 18:37:16,632 INFO L226 Difference]: Without dead ends: 660 [2022-11-18 18:37:16,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:37:16,633 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:16,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 116 Unchecked, 0.2s Time] [2022-11-18 18:37:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-11-18 18:37:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 655. [2022-11-18 18:37:16,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 618 states have (on average 3.118122977346278) internal successors, (1927), 654 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1927 transitions. [2022-11-18 18:37:16,649 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1927 transitions. Word has length 9 [2022-11-18 18:37:16,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:16,649 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 1927 transitions. [2022-11-18 18:37:16,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:16,650 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1927 transitions. [2022-11-18 18:37:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:37:16,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:16,651 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:16,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:37:16,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:16,865 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:37:16,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:16,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1575040273, now seen corresponding path program 1 times [2022-11-18 18:37:16,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:16,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866534337] [2022-11-18 18:37:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:16,866 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 [2022-11-18 18:37:16,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:16,867 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:16,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:37:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:17,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 18:37:17,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:17,311 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:37:17,312 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:37:17,512 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:37:17,513 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:37:17,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:17,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-11-18 18:37:17,801 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:37:17,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:37:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:37:17,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:37:21,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:21,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866534337] [2022-11-18 18:37:21,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866534337] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:21,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:37:21,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-18 18:37:21,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260517394] [2022-11-18 18:37:21,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:21,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:37:21,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:21,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:37:21,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:37:21,959 INFO L87 Difference]: Start difference. First operand 655 states and 1927 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:24,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:24,650 INFO L93 Difference]: Finished difference Result 668 states and 1954 transitions. [2022-11-18 18:37:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:37:24,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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 9 [2022-11-18 18:37:24,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:24,653 INFO L225 Difference]: With dead ends: 668 [2022-11-18 18:37:24,653 INFO L226 Difference]: Without dead ends: 668 [2022-11-18 18:37:24,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:37:24,654 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:24,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 116 Unchecked, 0.2s Time] [2022-11-18 18:37:24,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-11-18 18:37:24,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2022-11-18 18:37:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 631 states have (on average 3.096671949286846) internal successors, (1954), 667 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:24,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1954 transitions. [2022-11-18 18:37:24,671 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1954 transitions. Word has length 9 [2022-11-18 18:37:24,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:24,671 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 1954 transitions. [2022-11-18 18:37:24,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:24,672 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1954 transitions. [2022-11-18 18:37:24,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:37:24,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:24,673 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:24,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:24,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:24,881 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:37:24,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:24,881 INFO L85 PathProgramCache]: Analyzing trace with hash -95609147, now seen corresponding path program 2 times [2022-11-18 18:37:24,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:24,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427832454] [2022-11-18 18:37:24,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:24,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:24,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:24,883 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:24,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:37:25,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:25,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:25,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:37:25,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:25,275 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:37:25,276 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:37:25,484 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:37:25,484 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:37:25,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:25,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:37:25,640 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:37:25,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:37:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:37:25,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:25,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:25,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427832454] [2022-11-18 18:37:25,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427832454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:25,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:25,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:37:25,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048501821] [2022-11-18 18:37:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:25,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:37:25,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:37:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:37:25,725 INFO L87 Difference]: Start difference. First operand 668 states and 1954 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:26,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:26,115 INFO L93 Difference]: Finished difference Result 428 states and 1181 transitions. [2022-11-18 18:37:26,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:37:26,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 18:37:26,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:26,117 INFO L225 Difference]: With dead ends: 428 [2022-11-18 18:37:26,117 INFO L226 Difference]: Without dead ends: 428 [2022-11-18 18:37:26,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:37:26,118 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 26 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:26,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 6 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:37:26,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-18 18:37:26,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 325. [2022-11-18 18:37:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 315 states have (on average 2.93015873015873) internal successors, (923), 324 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 923 transitions. [2022-11-18 18:37:26,125 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 923 transitions. Word has length 9 [2022-11-18 18:37:26,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:26,125 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 923 transitions. [2022-11-18 18:37:26,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 923 transitions. [2022-11-18 18:37:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:37:26,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:26,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:26,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:26,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:26,326 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:37:26,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:26,327 INFO L85 PathProgramCache]: Analyzing trace with hash 718532968, now seen corresponding path program 1 times [2022-11-18 18:37:26,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:26,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031856361] [2022-11-18 18:37:26,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:26,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:26,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:26,328 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:26,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:37:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:26,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:37:26,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:26,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:26,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:26,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031856361] [2022-11-18 18:37:26,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031856361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:26,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:26,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:37:26,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390741750] [2022-11-18 18:37:26,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:26,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:37:26,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:26,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:37:26,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:37:26,504 INFO L87 Difference]: Start difference. First operand 325 states and 923 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:26,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:26,852 INFO L93 Difference]: Finished difference Result 349 states and 979 transitions. [2022-11-18 18:37:26,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:37:26,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:37:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:26,854 INFO L225 Difference]: With dead ends: 349 [2022-11-18 18:37:26,854 INFO L226 Difference]: Without dead ends: 320 [2022-11-18 18:37:26,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:37:26,855 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:26,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:37:26,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-18 18:37:26,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 314. [2022-11-18 18:37:26,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 304 states have (on average 2.9703947368421053) internal successors, (903), 313 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:26,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 903 transitions. [2022-11-18 18:37:26,860 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 903 transitions. Word has length 10 [2022-11-18 18:37:26,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:26,860 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 903 transitions. [2022-11-18 18:37:26,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:26,861 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 903 transitions. [2022-11-18 18:37:26,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:37:26,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:26,861 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:26,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:27,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:27,069 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:37:27,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash 996122522, now seen corresponding path program 2 times [2022-11-18 18:37:27,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:27,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795055955] [2022-11-18 18:37:27,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:27,071 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 [2022-11-18 18:37:27,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:27,072 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:27,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:37:27,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:27,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:27,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:37:27,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:27,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:27,398 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-18 18:37:27,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-18 18:37:27,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 163 [2022-11-18 18:37:27,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:27,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:37:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:37:27,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:27,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:27,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795055955] [2022-11-18 18:37:27,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795055955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:27,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:27,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:37:27,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306355413] [2022-11-18 18:37:27,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:27,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:37:27,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:27,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:37:27,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:37:27,653 INFO L87 Difference]: Start difference. First operand 314 states and 903 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:27,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:27,893 INFO L93 Difference]: Finished difference Result 306 states and 883 transitions. [2022-11-18 18:37:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:37:27,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:37:27,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:27,895 INFO L225 Difference]: With dead ends: 306 [2022-11-18 18:37:27,895 INFO L226 Difference]: Without dead ends: 297 [2022-11-18 18:37:27,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:37:27,896 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:27,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2022-11-18 18:37:27,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-18 18:37:27,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 288. [2022-11-18 18:37:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 279 states have (on average 3.025089605734767) internal successors, (844), 287 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 844 transitions. [2022-11-18 18:37:27,902 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 844 transitions. Word has length 10 [2022-11-18 18:37:27,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:27,902 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 844 transitions. [2022-11-18 18:37:27,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:27,903 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 844 transitions. [2022-11-18 18:37:27,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:37:27,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:27,903 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1] [2022-11-18 18:37:27,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:37:28,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:28,104 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:37:28,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:28,104 INFO L85 PathProgramCache]: Analyzing trace with hash 962538908, now seen corresponding path program 1 times [2022-11-18 18:37:28,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:28,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108991331] [2022-11-18 18:37:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:28,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:28,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:28,106 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:28,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:37:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:28,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:37:28,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:28,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 18:37:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:28,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:31,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:31,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108991331] [2022-11-18 18:37:31,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108991331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:31,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:37:31,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-18 18:37:31,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649416800] [2022-11-18 18:37:31,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:31,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:37:31,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:31,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:37:31,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:37:31,495 INFO L87 Difference]: Start difference. First operand 288 states and 844 transitions. Second operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:37,278 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 [] [2022-11-18 18:37:38,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:37:40,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:37:42,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:37:44,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:37:46,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:37:48,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:38:02,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:02,170 INFO L93 Difference]: Finished difference Result 3692 states and 11413 transitions. [2022-11-18 18:38:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:38:02,172 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:38:02,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:02,180 INFO L225 Difference]: With dead ends: 3692 [2022-11-18 18:38:02,180 INFO L226 Difference]: Without dead ends: 3692 [2022-11-18 18:38:02,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2022-11-18 18:38:02,181 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2300 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 148 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:02,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2300 Valid, 213 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1855 Invalid, 6 Unknown, 0 Unchecked, 24.1s Time] [2022-11-18 18:38:02,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3692 states. [2022-11-18 18:38:02,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3692 to 306. [2022-11-18 18:38:02,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 297 states have (on average 2.9326599326599325) internal successors, (871), 305 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:02,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 871 transitions. [2022-11-18 18:38:02,206 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 871 transitions. Word has length 10 [2022-11-18 18:38:02,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:02,206 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 871 transitions. [2022-11-18 18:38:02,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:02,206 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 871 transitions. [2022-11-18 18:38:02,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:38:02,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:02,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:02,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:02,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:02,412 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:38:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:02,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1572169812, now seen corresponding path program 1 times [2022-11-18 18:38:02,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:02,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739326162] [2022-11-18 18:38:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:02,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:02,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:02,416 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:02,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-18 18:38:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:02,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:38:02,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:02,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:02,903 INFO L321 Elim1Store]: treesize reduction 66, result has 29.8 percent of original size [2022-11-18 18:38:02,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 40 [2022-11-18 18:38:02,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 242 [2022-11-18 18:38:03,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:03,198 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:38:03,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 28 [2022-11-18 18:38:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:03,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:08,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:08,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739326162] [2022-11-18 18:38:08,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739326162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:08,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:08,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 18:38:08,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707579072] [2022-11-18 18:38:08,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:08,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:38:08,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:08,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:38:08,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:38:08,369 INFO L87 Difference]: Start difference. First operand 306 states and 871 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:08,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:08,876 INFO L93 Difference]: Finished difference Result 364 states and 998 transitions. [2022-11-18 18:38:08,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:38:08,878 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:38:08,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:08,879 INFO L225 Difference]: With dead ends: 364 [2022-11-18 18:38:08,879 INFO L226 Difference]: Without dead ends: 364 [2022-11-18 18:38:08,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:38:08,880 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:08,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 18 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 77 Unchecked, 0.3s Time] [2022-11-18 18:38:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-11-18 18:38:08,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 336. [2022-11-18 18:38:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 327 states have (on average 2.8623853211009176) internal successors, (936), 335 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 936 transitions. [2022-11-18 18:38:08,885 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 936 transitions. Word has length 10 [2022-11-18 18:38:08,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:08,885 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 936 transitions. [2022-11-18 18:38:08,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:08,886 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 936 transitions. [2022-11-18 18:38:08,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:38:08,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:08,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:08,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:09,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:09,089 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:38:09,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:09,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1572080439, now seen corresponding path program 1 times [2022-11-18 18:38:09,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:09,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697090463] [2022-11-18 18:38:09,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:09,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:09,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:09,091 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:09,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-18 18:38:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:09,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:38:09,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:09,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:09,505 INFO L321 Elim1Store]: treesize reduction 66, result has 29.8 percent of original size [2022-11-18 18:38:09,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 40 [2022-11-18 18:38:09,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 84 [2022-11-18 18:38:09,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:09,771 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:38:09,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 28 [2022-11-18 18:38:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:10,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:12,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:12,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697090463] [2022-11-18 18:38:12,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697090463] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:12,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:12,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 18:38:12,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945157540] [2022-11-18 18:38:12,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:12,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:38:12,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:12,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:38:12,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:38:12,881 INFO L87 Difference]: Start difference. First operand 336 states and 936 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:13,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:13,990 INFO L93 Difference]: Finished difference Result 630 states and 1841 transitions. [2022-11-18 18:38:13,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:38:13,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:38:13,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:13,994 INFO L225 Difference]: With dead ends: 630 [2022-11-18 18:38:13,994 INFO L226 Difference]: Without dead ends: 630 [2022-11-18 18:38:13,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:38:13,994 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 61 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:13,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 28 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 151 Unchecked, 0.8s Time] [2022-11-18 18:38:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-11-18 18:38:14,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 354. [2022-11-18 18:38:14,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 345 states have (on average 2.872463768115942) internal successors, (991), 353 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:14,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 991 transitions. [2022-11-18 18:38:14,006 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 991 transitions. Word has length 10 [2022-11-18 18:38:14,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:14,007 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 991 transitions. [2022-11-18 18:38:14,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:14,007 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 991 transitions. [2022-11-18 18:38:14,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:38:14,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:14,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:14,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-18 18:38:14,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:14,229 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:38:14,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:14,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1492630320, now seen corresponding path program 1 times [2022-11-18 18:38:14,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:14,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015363493] [2022-11-18 18:38:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:14,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:14,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:14,231 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:14,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-18 18:38:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:14,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:38:14,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:38:14,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:14,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:14,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015363493] [2022-11-18 18:38:14,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015363493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:14,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:14,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:14,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029368259] [2022-11-18 18:38:14,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:14,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:38:14,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:14,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:38:14,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:38:14,530 INFO L87 Difference]: Start difference. First operand 354 states and 991 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:15,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:15,099 INFO L93 Difference]: Finished difference Result 458 states and 1262 transitions. [2022-11-18 18:38:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:38:15,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:38:15,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:15,101 INFO L225 Difference]: With dead ends: 458 [2022-11-18 18:38:15,101 INFO L226 Difference]: Without dead ends: 396 [2022-11-18 18:38:15,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:38:15,102 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 27 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:15,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 9 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:38:15,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-11-18 18:38:15,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2022-11-18 18:38:15,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 386 states have (on average 2.77720207253886) internal successors, (1072), 395 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:15,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1072 transitions. [2022-11-18 18:38:15,131 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1072 transitions. Word has length 11 [2022-11-18 18:38:15,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:15,132 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 1072 transitions. [2022-11-18 18:38:15,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1072 transitions. [2022-11-18 18:38:15,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:38:15,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:15,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:15,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:15,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:15,348 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:38:15,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:15,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1489078493, now seen corresponding path program 1 times [2022-11-18 18:38:15,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:15,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992292903] [2022-11-18 18:38:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:15,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:15,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:15,350 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:15,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-18 18:38:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:15,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:38:15,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:15,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:16,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:16,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:16,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992292903] [2022-11-18 18:38:16,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992292903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:16,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:16,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-18 18:38:16,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021437057] [2022-11-18 18:38:16,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:16,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:38:16,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:16,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:38:16,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:38:16,169 INFO L87 Difference]: Start difference. First operand 396 states and 1072 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:16,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:16,778 INFO L93 Difference]: Finished difference Result 404 states and 1070 transitions. [2022-11-18 18:38:16,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:38:16,779 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:38:16,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:16,779 INFO L225 Difference]: With dead ends: 404 [2022-11-18 18:38:16,780 INFO L226 Difference]: Without dead ends: 404 [2022-11-18 18:38:16,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:38:16,780 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:16,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 23 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 33 Unchecked, 0.5s Time] [2022-11-18 18:38:16,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-11-18 18:38:16,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 398. [2022-11-18 18:38:16,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 387 states have (on average 2.751937984496124) internal successors, (1065), 397 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1065 transitions. [2022-11-18 18:38:16,789 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1065 transitions. Word has length 11 [2022-11-18 18:38:16,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:16,790 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 1065 transitions. [2022-11-18 18:38:16,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1065 transitions. [2022-11-18 18:38:16,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:38:16,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:16,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:16,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:16,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:16,991 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:38:16,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:16,991 INFO L85 PathProgramCache]: Analyzing trace with hash 973101405, now seen corresponding path program 1 times [2022-11-18 18:38:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:16,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660655706] [2022-11-18 18:38:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:16,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:16,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:16,993 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:16,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-18 18:38:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:17,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 18:38:17,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:17,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:17,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:17,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:17,391 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 18:38:17,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 34 [2022-11-18 18:38:17,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:38:17,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:17,668 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:38:17,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 28 [2022-11-18 18:38:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:18,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:21,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:21,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660655706] [2022-11-18 18:38:21,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660655706] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:21,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:21,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 18:38:21,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418256510] [2022-11-18 18:38:21,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:21,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:38:21,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:38:21,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:38:21,385 INFO L87 Difference]: Start difference. First operand 398 states and 1065 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:21,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:21,821 INFO L93 Difference]: Finished difference Result 473 states and 1215 transitions. [2022-11-18 18:38:21,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:38:21,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:38:21,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:21,823 INFO L225 Difference]: With dead ends: 473 [2022-11-18 18:38:21,823 INFO L226 Difference]: Without dead ends: 463 [2022-11-18 18:38:21,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 8 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:38:21,823 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:21,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 96 Unchecked, 0.3s Time] [2022-11-18 18:38:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-18 18:38:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 403. [2022-11-18 18:38:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 392 states have (on average 2.7219387755102042) internal successors, (1067), 402 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1067 transitions. [2022-11-18 18:38:21,831 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1067 transitions. Word has length 12 [2022-11-18 18:38:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:21,831 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 1067 transitions. [2022-11-18 18:38:21,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1067 transitions. [2022-11-18 18:38:21,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:38:21,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:21,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:21,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:22,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:22,045 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:38:22,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:22,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1058988858, now seen corresponding path program 1 times [2022-11-18 18:38:22,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:22,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029421092] [2022-11-18 18:38:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:22,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:22,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:22,047 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:22,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-18 18:38:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:22,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:38:22,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:22,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:22,420 INFO L321 Elim1Store]: treesize reduction 66, result has 29.8 percent of original size [2022-11-18 18:38:22,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 40 [2022-11-18 18:38:22,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 510 treesize of output 494 [2022-11-18 18:38:22,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:22,700 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:38:22,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 28 [2022-11-18 18:38:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:23,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:27,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:27,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029421092] [2022-11-18 18:38:27,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029421092] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:27,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:27,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 18:38:27,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032415706] [2022-11-18 18:38:27,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:27,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:38:27,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:27,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:38:27,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:38:27,578 INFO L87 Difference]: Start difference. First operand 403 states and 1067 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:28,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:28,265 INFO L93 Difference]: Finished difference Result 446 states and 1185 transitions. [2022-11-18 18:38:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:38:28,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:38:28,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:28,267 INFO L225 Difference]: With dead ends: 446 [2022-11-18 18:38:28,267 INFO L226 Difference]: Without dead ends: 413 [2022-11-18 18:38:28,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:38:28,268 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:28,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 14 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 80 Unchecked, 0.5s Time] [2022-11-18 18:38:28,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-11-18 18:38:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 348. [2022-11-18 18:38:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 338 states have (on average 2.834319526627219) internal successors, (958), 347 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:28,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 958 transitions. [2022-11-18 18:38:28,276 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 958 transitions. Word has length 12 [2022-11-18 18:38:28,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:28,277 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 958 transitions. [2022-11-18 18:38:28,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 958 transitions. [2022-11-18 18:38:28,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:38:28,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:28,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:28,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-18 18:38:28,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:28,490 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:38:28,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:28,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1888796347, now seen corresponding path program 1 times [2022-11-18 18:38:28,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:28,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261264824] [2022-11-18 18:38:28,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:28,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:28,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:28,491 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:28,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-18 18:38:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:28,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 18:38:28,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:28,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 18:38:29,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:38:29,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:38:30,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:30,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261264824] [2022-11-18 18:38:30,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261264824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:30,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:30,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 18:38:30,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522407699] [2022-11-18 18:38:30,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:30,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:38:30,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:30,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:38:30,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:38:30,092 INFO L87 Difference]: Start difference. First operand 348 states and 958 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:31,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:31,745 INFO L93 Difference]: Finished difference Result 658 states and 1928 transitions. [2022-11-18 18:38:31,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:38:31,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:38:31,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:31,747 INFO L225 Difference]: With dead ends: 658 [2022-11-18 18:38:31,748 INFO L226 Difference]: Without dead ends: 658 [2022-11-18 18:38:31,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:38:31,748 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 103 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:31,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 18 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 148 Unchecked, 0.5s Time] [2022-11-18 18:38:31,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-11-18 18:38:31,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 606. [2022-11-18 18:38:31,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 596 states have (on average 3.0369127516778525) internal successors, (1810), 605 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:31,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1810 transitions. [2022-11-18 18:38:31,758 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1810 transitions. Word has length 12 [2022-11-18 18:38:31,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:31,759 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 1810 transitions. [2022-11-18 18:38:31,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:31,759 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1810 transitions. [2022-11-18 18:38:31,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:38:31,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:31,759 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:31,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:31,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:31,960 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:38:31,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:31,960 INFO L85 PathProgramCache]: Analyzing trace with hash -726910164, now seen corresponding path program 2 times [2022-11-18 18:38:31,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:31,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118547388] [2022-11-18 18:38:31,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:38:31,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:31,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:31,962 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:31,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-18 18:38:32,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:38:32,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:32,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:38:32,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:32,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:32,324 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-18 18:38:32,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-18 18:38:32,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 126 [2022-11-18 18:38:32,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:32,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:38:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:38:32,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:32,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:32,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118547388] [2022-11-18 18:38:32,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118547388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:32,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:32,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:32,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092912788] [2022-11-18 18:38:32,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:32,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:38:32,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:32,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:38:32,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:38:32,682 INFO L87 Difference]: Start difference. First operand 606 states and 1810 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:33,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:33,114 INFO L93 Difference]: Finished difference Result 610 states and 1814 transitions. [2022-11-18 18:38:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:38:33,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:38:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:33,117 INFO L225 Difference]: With dead ends: 610 [2022-11-18 18:38:33,118 INFO L226 Difference]: Without dead ends: 610 [2022-11-18 18:38:33,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:38:33,118 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:33,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 35 Unchecked, 0.4s Time] [2022-11-18 18:38:33,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-11-18 18:38:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2022-11-18 18:38:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 600 states have (on average 3.0233333333333334) internal successors, (1814), 609 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:33,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1814 transitions. [2022-11-18 18:38:33,135 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1814 transitions. Word has length 12 [2022-11-18 18:38:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:33,135 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 1814 transitions. [2022-11-18 18:38:33,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:33,136 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1814 transitions. [2022-11-18 18:38:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:38:33,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:33,137 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:33,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:33,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:33,338 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:38:33,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash -726820791, now seen corresponding path program 2 times [2022-11-18 18:38:33,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:33,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327737300] [2022-11-18 18:38:33,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:38:33,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:33,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:33,341 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:33,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-18 18:38:33,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:38:33,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:33,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:38:33,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:33,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:33,843 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-18 18:38:33,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-18 18:38:33,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 163 [2022-11-18 18:38:34,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:34,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:38:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:38:34,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:34,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:34,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327737300] [2022-11-18 18:38:34,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327737300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:34,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:34,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:34,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201647695] [2022-11-18 18:38:34,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:34,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:38:34,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:34,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:38:34,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:38:34,216 INFO L87 Difference]: Start difference. First operand 610 states and 1814 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:34,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:34,653 INFO L93 Difference]: Finished difference Result 604 states and 1798 transitions. [2022-11-18 18:38:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:38:34,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:38:34,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:34,655 INFO L225 Difference]: With dead ends: 604 [2022-11-18 18:38:34,655 INFO L226 Difference]: Without dead ends: 581 [2022-11-18 18:38:34,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:38:34,656 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:34,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 12 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 40 Unchecked, 0.4s Time] [2022-11-18 18:38:34,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-11-18 18:38:34,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2022-11-18 18:38:34,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 572 states have (on average 3.06993006993007) internal successors, (1756), 580 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1756 transitions. [2022-11-18 18:38:34,670 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1756 transitions. Word has length 12 [2022-11-18 18:38:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:34,670 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 1756 transitions. [2022-11-18 18:38:34,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1756 transitions. [2022-11-18 18:38:34,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:38:34,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:34,672 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-18 18:38:34,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-11-18 18:38:34,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:34,885 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:38:34,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:34,886 INFO L85 PathProgramCache]: Analyzing trace with hash 416643243, now seen corresponding path program 3 times [2022-11-18 18:38:34,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:34,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341966866] [2022-11-18 18:38:34,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:38:34,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:34,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:34,888 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:34,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-18 18:38:35,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 18:38:35,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:35,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 18:38:35,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:35,396 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:38:35,397 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:38:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:36,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:40,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:40,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341966866] [2022-11-18 18:38:40,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341966866] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:40,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:40,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-18 18:38:40,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552855480] [2022-11-18 18:38:40,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:40,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 18:38:40,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:40,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 18:38:40,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:38:40,295 INFO L87 Difference]: Start difference. First operand 581 states and 1756 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:50,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:38:52,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:38:54,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:38:56,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:38:58,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:00,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:02,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:04,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:06,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:08,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:26,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:26,354 INFO L93 Difference]: Finished difference Result 2993 states and 9102 transitions. [2022-11-18 18:39:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:39:26,356 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:39:26,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:26,362 INFO L225 Difference]: With dead ends: 2993 [2022-11-18 18:39:26,362 INFO L226 Difference]: Without dead ends: 2993 [2022-11-18 18:39:26,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:39:26,364 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1826 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 3142 mSolverCounterSat, 139 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 3142 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:26,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 360 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 3142 Invalid, 9 Unknown, 0 Unchecked, 31.0s Time] [2022-11-18 18:39:26,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2022-11-18 18:39:26,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 593. [2022-11-18 18:39:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 584 states have (on average 3.047945205479452) internal successors, (1780), 592 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:26,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1780 transitions. [2022-11-18 18:39:26,387 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1780 transitions. Word has length 12 [2022-11-18 18:39:26,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:26,387 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 1780 transitions. [2022-11-18 18:39:26,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:26,388 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1780 transitions. [2022-11-18 18:39:26,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:39:26,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:26,389 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:26,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:26,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:39:26,601 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:39:26,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:26,601 INFO L85 PathProgramCache]: Analyzing trace with hash 251496101, now seen corresponding path program 2 times [2022-11-18 18:39:26,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:39:26,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764680419] [2022-11-18 18:39:26,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:39:26,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:39:26,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:39:26,603 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:39:26,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-18 18:39:26,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:39:26,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:39:26,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:39:26,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:26,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 18:39:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 18:39:26,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:26,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:39:26,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764680419] [2022-11-18 18:39:26,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764680419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:26,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:26,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:26,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792298702] [2022-11-18 18:39:26,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:26,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:39:26,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:39:26,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:39:26,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:39:26,981 INFO L87 Difference]: Start difference. First operand 593 states and 1780 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:27,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:27,321 INFO L93 Difference]: Finished difference Result 523 states and 1546 transitions. [2022-11-18 18:39:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:39:27,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:39:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:27,323 INFO L225 Difference]: With dead ends: 523 [2022-11-18 18:39:27,323 INFO L226 Difference]: Without dead ends: 523 [2022-11-18 18:39:27,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:39:27,323 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:27,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:39:27,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-11-18 18:39:27,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 265. [2022-11-18 18:39:27,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 261 states have (on average 2.7049808429118776) internal successors, (706), 264 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:27,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 706 transitions. [2022-11-18 18:39:27,332 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 706 transitions. Word has length 14 [2022-11-18 18:39:27,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:27,332 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 706 transitions. [2022-11-18 18:39:27,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:27,333 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 706 transitions. [2022-11-18 18:39:27,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 18:39:27,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:27,334 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:27,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:27,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:39:27,537 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:39:27,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:27,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1363348553, now seen corresponding path program 1 times [2022-11-18 18:39:27,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:39:27,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450642005] [2022-11-18 18:39:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:27,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:39:27,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:39:27,539 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:39:27,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-18 18:39:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:27,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:39:27,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:27,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:28,044 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-18 18:39:28,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-18 18:39:28,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 126 [2022-11-18 18:39:28,193 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 18:39:28,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:39:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:39:28,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:39:30,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:39:30,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450642005] [2022-11-18 18:39:30,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450642005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:39:30,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:39:30,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-11-18 18:39:30,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379454253] [2022-11-18 18:39:30,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:30,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:39:30,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:39:30,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:39:30,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:39:30,353 INFO L87 Difference]: Start difference. First operand 265 states and 706 transitions. Second operand has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:31,905 INFO L93 Difference]: Finished difference Result 650 states and 1863 transitions. [2022-11-18 18:39:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:39:31,905 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 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 15 [2022-11-18 18:39:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:31,907 INFO L225 Difference]: With dead ends: 650 [2022-11-18 18:39:31,907 INFO L226 Difference]: Without dead ends: 650 [2022-11-18 18:39:31,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:39:31,907 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 275 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 257 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:31,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 47 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 147 Invalid, 0 Unknown, 257 Unchecked, 0.9s Time] [2022-11-18 18:39:31,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-11-18 18:39:31,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 265. [2022-11-18 18:39:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 261 states have (on average 2.7049808429118776) internal successors, (706), 264 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 706 transitions. [2022-11-18 18:39:31,927 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 706 transitions. Word has length 15 [2022-11-18 18:39:31,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:31,927 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 706 transitions. [2022-11-18 18:39:31,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:31,927 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 706 transitions. [2022-11-18 18:39:31,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 18:39:31,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:31,928 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1] [2022-11-18 18:39:31,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:32,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:39:32,142 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:39:32,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:32,142 INFO L85 PathProgramCache]: Analyzing trace with hash 654002761, now seen corresponding path program 2 times [2022-11-18 18:39:32,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:39:32,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601927608] [2022-11-18 18:39:32,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:39:32,143 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 [2022-11-18 18:39:32,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:39:32,144 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:39:32,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-18 18:39:32,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:39:32,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:39:32,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 18:39:32,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:32,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 18:39:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:33,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:41,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:39:41,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601927608] [2022-11-18 18:39:41,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601927608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:39:41,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:39:41,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2022-11-18 18:39:41,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918567607] [2022-11-18 18:39:41,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:41,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 18:39:41,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:39:41,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 18:39:41,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 18:39:41,778 INFO L87 Difference]: Start difference. First operand 265 states and 706 transitions. Second operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:59,269 WARN L233 SmtUtils]: Spent 7.02s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:40:02,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:04,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:06,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:08,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:10,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:12,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:14,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:16,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:18,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:20,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:22,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:24,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:26,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:28,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:30,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:32,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:43,979 WARN L233 SmtUtils]: Spent 6.87s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:40:50,813 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:41:38,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:38,004 INFO L93 Difference]: Finished difference Result 6137 states and 18518 transitions. [2022-11-18 18:41:38,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 18:41:38,006 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 18:41:38,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:38,018 INFO L225 Difference]: With dead ends: 6137 [2022-11-18 18:41:38,019 INFO L226 Difference]: Without dead ends: 6137 [2022-11-18 18:41:38,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 58.4s TimeCoverageRelationStatistics Valid=934, Invalid=1718, Unknown=0, NotChecked=0, Total=2652 [2022-11-18 18:41:38,020 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 7736 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 6906 mSolverCounterSat, 525 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7736 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 7447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 6906 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:38,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7736 Valid, 864 Invalid, 7447 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [525 Valid, 6906 Invalid, 16 Unknown, 0 Unchecked, 65.8s Time] [2022-11-18 18:41:38,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6137 states. [2022-11-18 18:41:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6137 to 319. [2022-11-18 18:41:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 315 states have (on average 2.526984126984127) internal successors, (796), 318 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 796 transitions. [2022-11-18 18:41:38,059 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 796 transitions. Word has length 19 [2022-11-18 18:41:38,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:38,059 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 796 transitions. [2022-11-18 18:41:38,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 796 transitions. [2022-11-18 18:41:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 18:41:38,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:38,060 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:38,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:38,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:38,261 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:41:38,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:38,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1367320329, now seen corresponding path program 2 times [2022-11-18 18:41:38,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:41:38,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394207590] [2022-11-18 18:41:38,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:41:38,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:38,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:41:38,262 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:41:38,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-18 18:41:38,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:41:38,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:41:38,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:41:38,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:38,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:38,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:38,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:38,631 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 18:41:38,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-18 18:41:38,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:41:38,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:38,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:41:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 18:41:39,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:41:39,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:41:39,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394207590] [2022-11-18 18:41:39,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394207590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:39,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:39,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:41:39,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725590573] [2022-11-18 18:41:39,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:39,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:41:39,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:41:39,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:41:39,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:41:39,007 INFO L87 Difference]: Start difference. First operand 319 states and 796 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:39,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:39,216 INFO L93 Difference]: Finished difference Result 327 states and 808 transitions. [2022-11-18 18:41:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:41:39,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 18:41:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:39,220 INFO L225 Difference]: With dead ends: 327 [2022-11-18 18:41:39,220 INFO L226 Difference]: Without dead ends: 327 [2022-11-18 18:41:39,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:41:39,223 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:39,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 9 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 26 Unchecked, 0.2s Time] [2022-11-18 18:41:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-18 18:41:39,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 323. [2022-11-18 18:41:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 319 states have (on average 2.5141065830721003) internal successors, (802), 322 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 802 transitions. [2022-11-18 18:41:39,231 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 802 transitions. Word has length 19 [2022-11-18 18:41:39,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:39,232 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 802 transitions. [2022-11-18 18:41:39,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 802 transitions. [2022-11-18 18:41:39,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 18:41:39,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:39,234 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:39,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:39,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:39,448 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:41:39,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:39,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1367230956, now seen corresponding path program 1 times [2022-11-18 18:41:39,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:41:39,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597173261] [2022-11-18 18:41:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:39,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:39,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:41:39,450 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:41:39,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-18 18:41:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:39,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:41:39,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:39,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:40,077 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-18 18:41:40,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-18 18:41:40,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 126 [2022-11-18 18:41:40,197 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 18:41:40,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:41:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:41:41,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:41:44,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:41:44,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597173261] [2022-11-18 18:41:44,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597173261] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:44,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:41:44,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2022-11-18 18:41:44,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819232283] [2022-11-18 18:41:44,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:44,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 18:41:44,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:41:44,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 18:41:44,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:41:44,249 INFO L87 Difference]: Start difference. First operand 323 states and 802 transitions. Second operand has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:49,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:49,820 INFO L93 Difference]: Finished difference Result 746 states and 2059 transitions. [2022-11-18 18:41:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 18:41:49,822 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 19 [2022-11-18 18:41:49,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:49,823 INFO L225 Difference]: With dead ends: 746 [2022-11-18 18:41:49,823 INFO L226 Difference]: Without dead ends: 746 [2022-11-18 18:41:49,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=403, Invalid=857, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 18:41:49,824 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 383 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 440 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:49,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 101 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 377 Invalid, 0 Unknown, 440 Unchecked, 1.8s Time] [2022-11-18 18:41:49,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-18 18:41:49,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 355. [2022-11-18 18:41:49,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 351 states have (on average 2.5356125356125356) internal successors, (890), 354 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 890 transitions. [2022-11-18 18:41:49,835 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 890 transitions. Word has length 19 [2022-11-18 18:41:49,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:49,835 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 890 transitions. [2022-11-18 18:41:49,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:49,836 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 890 transitions. [2022-11-18 18:41:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 18:41:49,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:49,837 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:49,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:50,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:50,051 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:41:50,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:50,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1701580323, now seen corresponding path program 1 times [2022-11-18 18:41:50,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:41:50,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038707035] [2022-11-18 18:41:50,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:50,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:50,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:41:50,053 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:41:50,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-18 18:41:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:50,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 18:41:50,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:50,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:50,691 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-18 18:41:50,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-18 18:41:50,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 178 [2022-11-18 18:41:50,825 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 18:41:50,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:41:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 18:41:52,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 18:41:55,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:41:55,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038707035] [2022-11-18 18:41:55,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038707035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:55,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:41:55,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-18 18:41:55,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886214925] [2022-11-18 18:41:55,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:55,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 18:41:55,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:41:55,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 18:41:55,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:41:55,523 INFO L87 Difference]: Start difference. First operand 355 states and 890 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:07,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:07,909 INFO L93 Difference]: Finished difference Result 1073 states and 3044 transitions. [2022-11-18 18:42:07,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:42:07,911 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 18:42:07,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:07,913 INFO L225 Difference]: With dead ends: 1073 [2022-11-18 18:42:07,913 INFO L226 Difference]: Without dead ends: 1073 [2022-11-18 18:42:07,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=596, Invalid=1474, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 18:42:07,914 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 295 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:07,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 175 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1046 Invalid, 0 Unknown, 274 Unchecked, 4.6s Time] [2022-11-18 18:42:07,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-11-18 18:42:07,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 323. [2022-11-18 18:42:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 319 states have (on average 2.5141065830721003) internal successors, (802), 322 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:07,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 802 transitions. [2022-11-18 18:42:07,925 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 802 transitions. Word has length 21 [2022-11-18 18:42:07,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:07,926 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 802 transitions. [2022-11-18 18:42:07,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:07,926 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 802 transitions. [2022-11-18 18:42:07,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:42:07,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:07,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:07,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:08,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:08,133 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:42:08,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:08,134 INFO L85 PathProgramCache]: Analyzing trace with hash 593294388, now seen corresponding path program 1 times [2022-11-18 18:42:08,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:08,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446878032] [2022-11-18 18:42:08,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:08,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:08,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:08,136 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:08,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-18 18:42:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:08,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 18:42:08,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:09,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:42:09,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:09,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:42:10,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:10,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:10,646 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 18:42:10,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 159 [2022-11-18 18:42:15,774 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:42:15,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:42:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:42:16,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:16,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:16,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446878032] [2022-11-18 18:42:16,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446878032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:16,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:16,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:42:16,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985697468] [2022-11-18 18:42:16,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:16,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:42:16,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:16,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:42:16,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=88, Unknown=2, NotChecked=0, Total=110 [2022-11-18 18:42:16,061 INFO L87 Difference]: Start difference. First operand 323 states and 802 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:16,434 INFO L93 Difference]: Finished difference Result 345 states and 835 transitions. [2022-11-18 18:42:16,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:42:16,435 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:42:16,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:16,436 INFO L225 Difference]: With dead ends: 345 [2022-11-18 18:42:16,436 INFO L226 Difference]: Without dead ends: 338 [2022-11-18 18:42:16,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=24, Invalid=106, Unknown=2, NotChecked=0, Total=132 [2022-11-18 18:42:16,437 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:16,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 45 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 148 Unchecked, 0.2s Time] [2022-11-18 18:42:16,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-18 18:42:16,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 337. [2022-11-18 18:42:16,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 333 states have (on average 2.4864864864864864) internal successors, (828), 336 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:16,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 828 transitions. [2022-11-18 18:42:16,441 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 828 transitions. Word has length 24 [2022-11-18 18:42:16,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:16,441 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 828 transitions. [2022-11-18 18:42:16,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:16,441 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 828 transitions. [2022-11-18 18:42:16,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:42:16,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:16,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:16,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:16,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:16,643 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:42:16,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:16,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1882319862, now seen corresponding path program 2 times [2022-11-18 18:42:16,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:16,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37541221] [2022-11-18 18:42:16,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:42:16,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:16,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:16,644 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:16,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-18 18:42:16,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:42:16,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:16,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 18:42:16,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:17,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:17,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:42:18,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:18,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:18,823 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 18:42:18,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 159 [2022-11-18 18:42:22,165 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:42:22,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:42:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:42:22,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:22,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:22,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37541221] [2022-11-18 18:42:22,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37541221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:22,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:22,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:42:22,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498498763] [2022-11-18 18:42:22,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:22,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:42:22,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:22,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:42:22,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=89, Unknown=1, NotChecked=0, Total=110 [2022-11-18 18:42:22,339 INFO L87 Difference]: Start difference. First operand 337 states and 828 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:22,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:22,603 INFO L93 Difference]: Finished difference Result 353 states and 855 transitions. [2022-11-18 18:42:22,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:42:22,604 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:42:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:22,605 INFO L225 Difference]: With dead ends: 353 [2022-11-18 18:42:22,605 INFO L226 Difference]: Without dead ends: 350 [2022-11-18 18:42:22,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=24, Invalid=107, Unknown=1, NotChecked=0, Total=132 [2022-11-18 18:42:22,606 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:22,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 46 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 256 Unchecked, 0.1s Time] [2022-11-18 18:42:22,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-18 18:42:22,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 345. [2022-11-18 18:42:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 341 states have (on average 2.4838709677419355) internal successors, (847), 344 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 847 transitions. [2022-11-18 18:42:22,613 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 847 transitions. Word has length 24 [2022-11-18 18:42:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:22,613 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 847 transitions. [2022-11-18 18:42:22,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 847 transitions. [2022-11-18 18:42:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:42:22,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:22,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:22,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:22,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:22,817 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:42:22,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:22,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1876870992, now seen corresponding path program 3 times [2022-11-18 18:42:22,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:22,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400452615] [2022-11-18 18:42:22,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:42:22,818 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 [2022-11-18 18:42:22,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:22,819 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:22,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-18 18:42:23,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:42:23,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:23,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 18:42:23,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:23,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:42:23,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:23,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:42:24,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:24,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:24,872 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 18:42:24,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 159 [2022-11-18 18:42:30,213 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:42:30,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:42:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:42:30,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:30,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:30,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400452615] [2022-11-18 18:42:30,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400452615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:30,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:30,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:42:30,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53874225] [2022-11-18 18:42:30,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:30,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:42:30,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:30,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:42:30,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=88, Unknown=2, NotChecked=0, Total=110 [2022-11-18 18:42:30,359 INFO L87 Difference]: Start difference. First operand 345 states and 847 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:30,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:30,613 INFO L93 Difference]: Finished difference Result 352 states and 854 transitions. [2022-11-18 18:42:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:42:30,614 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:42:30,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:30,615 INFO L225 Difference]: With dead ends: 352 [2022-11-18 18:42:30,615 INFO L226 Difference]: Without dead ends: 350 [2022-11-18 18:42:30,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=24, Invalid=106, Unknown=2, NotChecked=0, Total=132 [2022-11-18 18:42:30,615 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:30,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 128 Unchecked, 0.1s Time] [2022-11-18 18:42:30,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-18 18:42:30,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 347. [2022-11-18 18:42:30,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 343 states have (on average 2.4752186588921283) internal successors, (849), 346 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 849 transitions. [2022-11-18 18:42:30,619 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 849 transitions. Word has length 24 [2022-11-18 18:42:30,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:30,620 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 849 transitions. [2022-11-18 18:42:30,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:30,620 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 849 transitions. [2022-11-18 18:42:30,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:42:30,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:30,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:30,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:30,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:30,834 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:42:30,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:30,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2074471812, now seen corresponding path program 4 times [2022-11-18 18:42:30,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:30,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263348669] [2022-11-18 18:42:30,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:42:30,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:30,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:30,836 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:30,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-18 18:42:31,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:42:31,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:31,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 18:42:31,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:31,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:42:31,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:31,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:42:32,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:32,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:32,821 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 18:42:32,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 126 [2022-11-18 18:42:36,365 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:42:36,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 223 treesize of output 173 [2022-11-18 18:42:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:42:36,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:36,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:36,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263348669] [2022-11-18 18:42:36,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263348669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:36,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:36,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:42:36,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096339881] [2022-11-18 18:42:36,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:36,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:42:36,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:36,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:42:36,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=89, Unknown=1, NotChecked=0, Total=110 [2022-11-18 18:42:36,618 INFO L87 Difference]: Start difference. First operand 347 states and 849 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:36,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:36,946 INFO L93 Difference]: Finished difference Result 353 states and 854 transitions. [2022-11-18 18:42:36,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:42:36,948 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:42:36,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:36,949 INFO L225 Difference]: With dead ends: 353 [2022-11-18 18:42:36,949 INFO L226 Difference]: Without dead ends: 349 [2022-11-18 18:42:36,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=24, Invalid=107, Unknown=1, NotChecked=0, Total=132 [2022-11-18 18:42:36,950 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:36,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 139 Unchecked, 0.2s Time] [2022-11-18 18:42:36,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-11-18 18:42:36,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2022-11-18 18:42:36,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 343 states have (on average 2.4723032069970845) internal successors, (848), 346 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 848 transitions. [2022-11-18 18:42:36,959 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 848 transitions. Word has length 24 [2022-11-18 18:42:36,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:36,959 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 848 transitions. [2022-11-18 18:42:36,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:36,960 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 848 transitions. [2022-11-18 18:42:36,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:42:36,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:36,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:36,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:37,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:37,169 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:42:37,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:37,170 INFO L85 PathProgramCache]: Analyzing trace with hash 910240706, now seen corresponding path program 5 times [2022-11-18 18:42:37,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:37,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90967979] [2022-11-18 18:42:37,170 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:42:37,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:37,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:37,172 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:37,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-18 18:42:37,636 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:42:37,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:37,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 18:42:37,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:38,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:38,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:42:39,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:39,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:39,682 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 18:42:39,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 159 [2022-11-18 18:42:44,917 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:42:44,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:42:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:42:45,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:45,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:45,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90967979] [2022-11-18 18:42:45,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90967979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:45,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:45,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:42:45,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089192909] [2022-11-18 18:42:45,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:45,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:42:45,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:45,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:42:45,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=88, Unknown=2, NotChecked=0, Total=110 [2022-11-18 18:42:45,158 INFO L87 Difference]: Start difference. First operand 347 states and 848 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:45,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:45,491 INFO L93 Difference]: Finished difference Result 353 states and 853 transitions. [2022-11-18 18:42:45,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:42:45,494 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:42:45,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:45,495 INFO L225 Difference]: With dead ends: 353 [2022-11-18 18:42:45,495 INFO L226 Difference]: Without dead ends: 348 [2022-11-18 18:42:45,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=24, Invalid=106, Unknown=2, NotChecked=0, Total=132 [2022-11-18 18:42:45,495 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:45,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 153 Unchecked, 0.2s Time] [2022-11-18 18:42:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-18 18:42:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2022-11-18 18:42:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 343 states have (on average 2.4693877551020407) internal successors, (847), 346 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 847 transitions. [2022-11-18 18:42:45,503 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 847 transitions. Word has length 24 [2022-11-18 18:42:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:45,503 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 847 transitions. [2022-11-18 18:42:45,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:45,504 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 847 transitions. [2022-11-18 18:42:45,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:42:45,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:45,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:45,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Ended with exit code 0 [2022-11-18 18:42:45,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:45,706 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:42:45,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:45,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1743545458, now seen corresponding path program 6 times [2022-11-18 18:42:45,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:45,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931958253] [2022-11-18 18:42:45,707 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:42:45,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:45,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:45,709 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:45,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-18 18:42:46,097 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-18 18:42:46,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:46,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 18:42:46,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:46,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:42:46,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:46,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:42:48,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:48,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:48,030 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 18:42:48,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 159 [2022-11-18 18:42:51,182 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:42:51,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:42:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:42:51,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:51,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:51,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931958253] [2022-11-18 18:42:51,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931958253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:51,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:51,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:42:51,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375569805] [2022-11-18 18:42:51,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:51,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:42:51,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:51,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:42:51,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=89, Unknown=1, NotChecked=0, Total=110 [2022-11-18 18:42:51,458 INFO L87 Difference]: Start difference. First operand 347 states and 847 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:51,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:51,776 INFO L93 Difference]: Finished difference Result 355 states and 854 transitions. [2022-11-18 18:42:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:42:51,777 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:42:51,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:51,778 INFO L225 Difference]: With dead ends: 355 [2022-11-18 18:42:51,778 INFO L226 Difference]: Without dead ends: 349 [2022-11-18 18:42:51,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=24, Invalid=107, Unknown=1, NotChecked=0, Total=132 [2022-11-18 18:42:51,779 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 232 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:51,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 46 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 232 Unchecked, 0.2s Time] [2022-11-18 18:42:51,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-11-18 18:42:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2022-11-18 18:42:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 343 states have (on average 2.4664723032069973) internal successors, (846), 346 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:51,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 846 transitions. [2022-11-18 18:42:51,787 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 846 transitions. Word has length 24 [2022-11-18 18:42:51,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:51,787 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 846 transitions. [2022-11-18 18:42:51,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:51,788 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 846 transitions. [2022-11-18 18:42:51,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:42:51,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:51,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:51,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:52,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:52,006 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:42:52,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:52,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1152956180, now seen corresponding path program 7 times [2022-11-18 18:42:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:52,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952268940] [2022-11-18 18:42:52,007 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 18:42:52,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:52,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:52,008 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:52,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-18 18:42:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:52,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 18:42:52,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:53,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:53,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:42:53,363 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:53,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 18:42:53,674 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:53,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 27 [2022-11-18 18:42:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:42:53,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:53,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:53,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952268940] [2022-11-18 18:42:53,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952268940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:53,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:53,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:42:53,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082195514] [2022-11-18 18:42:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:53,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:42:53,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:53,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:42:53,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:42:53,915 INFO L87 Difference]: Start difference. First operand 347 states and 846 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:54,013 INFO L93 Difference]: Finished difference Result 374 states and 904 transitions. [2022-11-18 18:42:54,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:42:54,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:42:54,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:54,015 INFO L225 Difference]: With dead ends: 374 [2022-11-18 18:42:54,015 INFO L226 Difference]: Without dead ends: 367 [2022-11-18 18:42:54,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:42:54,016 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:54,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 43 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 153 Unchecked, 0.1s Time] [2022-11-18 18:42:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-11-18 18:42:54,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 364. [2022-11-18 18:42:54,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 360 states have (on average 2.475) internal successors, (891), 363 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 891 transitions. [2022-11-18 18:42:54,023 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 891 transitions. Word has length 24 [2022-11-18 18:42:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:54,023 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 891 transitions. [2022-11-18 18:42:54,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 891 transitions. [2022-11-18 18:42:54,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:42:54,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:54,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:54,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Ended with exit code 0 [2022-11-18 18:42:54,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:54,243 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:42:54,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:54,243 INFO L85 PathProgramCache]: Analyzing trace with hash 136069294, now seen corresponding path program 8 times [2022-11-18 18:42:54,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:54,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917449080] [2022-11-18 18:42:54,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:42:54,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:54,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:54,246 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:54,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-18 18:42:54,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:42:54,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:54,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 18:42:54,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:55,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:55,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:42:55,426 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:55,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 18:42:55,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:55,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 27 [2022-11-18 18:42:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:42:55,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:55,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:55,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917449080] [2022-11-18 18:42:55,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917449080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:55,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:55,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:42:55,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991916572] [2022-11-18 18:42:55,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:55,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:42:55,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:55,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:42:55,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:42:55,988 INFO L87 Difference]: Start difference. First operand 364 states and 891 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:56,075 INFO L93 Difference]: Finished difference Result 381 states and 919 transitions. [2022-11-18 18:42:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:42:56,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:42:56,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:56,077 INFO L225 Difference]: With dead ends: 381 [2022-11-18 18:42:56,077 INFO L226 Difference]: Without dead ends: 375 [2022-11-18 18:42:56,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:42:56,078 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:56,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 154 Unchecked, 0.1s Time] [2022-11-18 18:42:56,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-18 18:42:56,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 366. [2022-11-18 18:42:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 362 states have (on average 2.472375690607735) internal successors, (895), 365 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 895 transitions. [2022-11-18 18:42:56,083 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 895 transitions. Word has length 24 [2022-11-18 18:42:56,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:56,083 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 895 transitions. [2022-11-18 18:42:56,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:56,083 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 895 transitions. [2022-11-18 18:42:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:42:56,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:56,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:56,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:56,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:56,299 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:42:56,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:56,300 INFO L85 PathProgramCache]: Analyzing trace with hash 130620424, now seen corresponding path program 9 times [2022-11-18 18:42:56,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:56,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532775747] [2022-11-18 18:42:56,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:42:56,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:56,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:56,302 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:56,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-18 18:42:56,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:42:56,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:56,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 18:42:56,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:57,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:57,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:42:57,366 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:57,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 18:42:57,876 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:57,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 21 [2022-11-18 18:42:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:42:57,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:57,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:57,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532775747] [2022-11-18 18:42:57,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532775747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:57,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:57,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:42:57,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091868811] [2022-11-18 18:42:57,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:57,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:42:57,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:57,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:42:57,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:42:57,993 INFO L87 Difference]: Start difference. First operand 366 states and 895 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:58,080 INFO L93 Difference]: Finished difference Result 379 states and 916 transitions. [2022-11-18 18:42:58,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:42:58,081 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:42:58,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:58,082 INFO L225 Difference]: With dead ends: 379 [2022-11-18 18:42:58,082 INFO L226 Difference]: Without dead ends: 377 [2022-11-18 18:42:58,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:42:58,082 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:58,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2022-11-18 18:42:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-18 18:42:58,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 364. [2022-11-18 18:42:58,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 360 states have (on average 2.475) internal successors, (891), 363 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:58,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 891 transitions. [2022-11-18 18:42:58,088 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 891 transitions. Word has length 24 [2022-11-18 18:42:58,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:58,088 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 891 transitions. [2022-11-18 18:42:58,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:58,088 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 891 transitions. [2022-11-18 18:42:58,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:42:58,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:58,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:58,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Ended with exit code 0 [2022-11-18 18:42:58,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:58,305 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:42:58,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:58,305 INFO L85 PathProgramCache]: Analyzing trace with hash -68241990, now seen corresponding path program 10 times [2022-11-18 18:42:58,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:58,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526090958] [2022-11-18 18:42:58,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:42:58,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:58,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:58,308 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:58,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-18 18:42:58,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:42:58,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:58,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 18:42:58,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:59,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:59,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:42:59,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:59,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 18:42:59,889 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:59,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 27 [2022-11-18 18:42:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:42:59,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:59,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:59,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526090958] [2022-11-18 18:42:59,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526090958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:59,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:59,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:42:59,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913197907] [2022-11-18 18:42:59,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:59,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:42:59,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:59,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:42:59,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:42:59,999 INFO L87 Difference]: Start difference. First operand 364 states and 891 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:00,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:00,104 INFO L93 Difference]: Finished difference Result 377 states and 912 transitions. [2022-11-18 18:43:00,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:43:00,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:00,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:00,106 INFO L225 Difference]: With dead ends: 377 [2022-11-18 18:43:00,106 INFO L226 Difference]: Without dead ends: 375 [2022-11-18 18:43:00,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:00,107 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:00,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 125 Unchecked, 0.1s Time] [2022-11-18 18:43:00,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-18 18:43:00,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 364. [2022-11-18 18:43:00,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 360 states have (on average 2.475) internal successors, (891), 363 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 891 transitions. [2022-11-18 18:43:00,112 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 891 transitions. Word has length 24 [2022-11-18 18:43:00,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:00,112 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 891 transitions. [2022-11-18 18:43:00,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:00,112 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 891 transitions. [2022-11-18 18:43:00,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:00,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:00,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:00,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:00,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:00,317 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:00,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:00,317 INFO L85 PathProgramCache]: Analyzing trace with hash 800146876, now seen corresponding path program 11 times [2022-11-18 18:43:00,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:00,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121227627] [2022-11-18 18:43:00,318 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:43:00,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:00,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:00,319 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:00,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-18 18:43:00,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:43:00,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:00,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:43:00,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:00,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:43:01,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:01,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:01,449 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:01,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 18:43:01,866 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:01,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 27 [2022-11-18 18:43:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:01,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:01,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:01,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121227627] [2022-11-18 18:43:01,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121227627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:01,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:01,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:43:01,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015732252] [2022-11-18 18:43:01,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:01,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:43:01,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:01,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:43:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:01,972 INFO L87 Difference]: Start difference. First operand 364 states and 891 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:02,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:02,050 INFO L93 Difference]: Finished difference Result 377 states and 912 transitions. [2022-11-18 18:43:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:43:02,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:02,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:02,052 INFO L225 Difference]: With dead ends: 377 [2022-11-18 18:43:02,052 INFO L226 Difference]: Without dead ends: 375 [2022-11-18 18:43:02,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:02,053 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:02,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 125 Unchecked, 0.1s Time] [2022-11-18 18:43:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-18 18:43:02,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 364. [2022-11-18 18:43:02,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 360 states have (on average 2.475) internal successors, (891), 363 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 891 transitions. [2022-11-18 18:43:02,061 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 891 transitions. Word has length 24 [2022-11-18 18:43:02,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:02,061 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 891 transitions. [2022-11-18 18:43:02,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:02,061 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 891 transitions. [2022-11-18 18:43:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:02,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:02,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:02,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:02,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:02,263 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:02,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:02,263 INFO L85 PathProgramCache]: Analyzing trace with hash 978746382, now seen corresponding path program 12 times [2022-11-18 18:43:02,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:02,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940069879] [2022-11-18 18:43:02,264 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:43:02,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:02,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:02,265 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:02,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-18 18:43:02,547 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-18 18:43:02,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:02,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:43:02,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:02,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:43:03,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:03,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:03,310 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:03,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 18:43:03,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:03,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 21 [2022-11-18 18:43:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:03,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:03,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:03,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940069879] [2022-11-18 18:43:03,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940069879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:03,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:03,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:43:03,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063147206] [2022-11-18 18:43:03,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:03,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:43:03,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:03,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:43:03,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:03,922 INFO L87 Difference]: Start difference. First operand 364 states and 891 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:04,021 INFO L93 Difference]: Finished difference Result 371 states and 900 transitions. [2022-11-18 18:43:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:43:04,023 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:04,023 INFO L225 Difference]: With dead ends: 371 [2022-11-18 18:43:04,024 INFO L226 Difference]: Without dead ends: 369 [2022-11-18 18:43:04,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:04,024 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:04,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 110 Unchecked, 0.1s Time] [2022-11-18 18:43:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-18 18:43:04,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 356. [2022-11-18 18:43:04,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 352 states have (on average 2.4857954545454546) internal successors, (875), 355 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:04,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 875 transitions. [2022-11-18 18:43:04,029 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 875 transitions. Word has length 24 [2022-11-18 18:43:04,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:04,030 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 875 transitions. [2022-11-18 18:43:04,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:04,030 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 875 transitions. [2022-11-18 18:43:04,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:04,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:04,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:04,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:04,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:04,241 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:04,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:04,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1909662934, now seen corresponding path program 13 times [2022-11-18 18:43:04,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:04,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119144167] [2022-11-18 18:43:04,242 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 18:43:04,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:04,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:04,243 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:04,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-18 18:43:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:04,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 18:43:04,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:05,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:05,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:05,433 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:05,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 18:43:05,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:05,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 21 [2022-11-18 18:43:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:05,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:05,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:05,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119144167] [2022-11-18 18:43:05,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119144167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:05,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:05,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:43:05,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848312416] [2022-11-18 18:43:05,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:05,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:43:05,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:05,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:43:05,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:05,966 INFO L87 Difference]: Start difference. First operand 356 states and 875 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:06,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:06,061 INFO L93 Difference]: Finished difference Result 366 states and 887 transitions. [2022-11-18 18:43:06,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:43:06,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:06,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:06,063 INFO L225 Difference]: With dead ends: 366 [2022-11-18 18:43:06,063 INFO L226 Difference]: Without dead ends: 359 [2022-11-18 18:43:06,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:06,066 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:06,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 110 Unchecked, 0.1s Time] [2022-11-18 18:43:06,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-18 18:43:06,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2022-11-18 18:43:06,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 355 states have (on average 2.4788732394366195) internal successors, (880), 358 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:06,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 880 transitions. [2022-11-18 18:43:06,073 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 880 transitions. Word has length 24 [2022-11-18 18:43:06,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:06,073 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 880 transitions. [2022-11-18 18:43:06,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:06,073 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 880 transitions. [2022-11-18 18:43:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:06,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:06,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:06,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:06,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:06,289 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:06,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:06,289 INFO L85 PathProgramCache]: Analyzing trace with hash -620637460, now seen corresponding path program 14 times [2022-11-18 18:43:06,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:06,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603351527] [2022-11-18 18:43:06,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:43:06,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:06,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:06,290 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:06,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-18 18:43:06,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:43:06,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:06,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 18:43:06,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:06,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:06,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:07,219 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:07,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 18:43:07,664 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:07,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 21 [2022-11-18 18:43:07,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:07,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:07,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:07,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603351527] [2022-11-18 18:43:07,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603351527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:07,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:07,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:43:07,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319324899] [2022-11-18 18:43:07,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:07,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:43:07,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:07,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:43:07,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:07,794 INFO L87 Difference]: Start difference. First operand 359 states and 880 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:07,876 INFO L93 Difference]: Finished difference Result 373 states and 905 transitions. [2022-11-18 18:43:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:43:07,877 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:07,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:07,877 INFO L225 Difference]: With dead ends: 373 [2022-11-18 18:43:07,877 INFO L226 Difference]: Without dead ends: 367 [2022-11-18 18:43:07,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:07,878 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:07,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 135 Unchecked, 0.1s Time] [2022-11-18 18:43:07,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-11-18 18:43:07,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2022-11-18 18:43:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 363 states have (on average 2.46831955922865) internal successors, (896), 366 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:07,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 896 transitions. [2022-11-18 18:43:07,883 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 896 transitions. Word has length 24 [2022-11-18 18:43:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:07,883 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 896 transitions. [2022-11-18 18:43:07,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:07,883 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 896 transitions. [2022-11-18 18:43:07,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:07,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:07,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:07,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:08,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:08,084 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:08,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:08,085 INFO L85 PathProgramCache]: Analyzing trace with hash -626086330, now seen corresponding path program 15 times [2022-11-18 18:43:08,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:08,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526789900] [2022-11-18 18:43:08,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:43:08,085 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:08,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:08,086 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:08,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-18 18:43:08,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:43:08,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:08,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:43:08,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:08,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:43:08,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:08,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:09,024 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:09,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 18:43:09,439 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:09,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 27 [2022-11-18 18:43:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:09,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:09,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:09,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526789900] [2022-11-18 18:43:09,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526789900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:09,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:09,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:43:09,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907380679] [2022-11-18 18:43:09,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:09,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:43:09,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:09,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:43:09,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:09,528 INFO L87 Difference]: Start difference. First operand 367 states and 896 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:09,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:09,610 INFO L93 Difference]: Finished difference Result 371 states and 900 transitions. [2022-11-18 18:43:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:43:09,611 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:09,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:09,611 INFO L225 Difference]: With dead ends: 371 [2022-11-18 18:43:09,612 INFO L226 Difference]: Without dead ends: 369 [2022-11-18 18:43:09,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:09,612 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:09,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2022-11-18 18:43:09,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-18 18:43:09,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 356. [2022-11-18 18:43:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 352 states have (on average 2.4857954545454546) internal successors, (875), 355 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 875 transitions. [2022-11-18 18:43:09,619 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 875 transitions. Word has length 24 [2022-11-18 18:43:09,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:09,619 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 875 transitions. [2022-11-18 18:43:09,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 875 transitions. [2022-11-18 18:43:09,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:09,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:09,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:09,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-18 18:43:09,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:09,834 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:09,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:09,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1154781690, now seen corresponding path program 16 times [2022-11-18 18:43:09,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:09,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126939359] [2022-11-18 18:43:09,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:43:09,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:09,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:09,835 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:09,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-18 18:43:10,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:43:10,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:10,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 18:43:10,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:10,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:43:10,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:43:10,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:10,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:11,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:12,385 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:12,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 179 treesize of output 164 [2022-11-18 18:43:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:12,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:12,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:12,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126939359] [2022-11-18 18:43:12,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126939359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:12,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:12,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:43:12,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341031904] [2022-11-18 18:43:12,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:12,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:43:12,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:12,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:43:12,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:43:12,616 INFO L87 Difference]: Start difference. First operand 356 states and 875 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:12,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:12,694 INFO L93 Difference]: Finished difference Result 371 states and 901 transitions. [2022-11-18 18:43:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:43:12,695 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:12,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:12,696 INFO L225 Difference]: With dead ends: 371 [2022-11-18 18:43:12,696 INFO L226 Difference]: Without dead ends: 364 [2022-11-18 18:43:12,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:43:12,697 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:12,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 40 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 111 Unchecked, 0.1s Time] [2022-11-18 18:43:12,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-11-18 18:43:12,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 363. [2022-11-18 18:43:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 359 states have (on average 2.487465181058496) internal successors, (893), 362 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 893 transitions. [2022-11-18 18:43:12,704 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 893 transitions. Word has length 24 [2022-11-18 18:43:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:12,704 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 893 transitions. [2022-11-18 18:43:12,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 893 transitions. [2022-11-18 18:43:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:12,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:12,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:12,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Ended with exit code 0 [2022-11-18 18:43:12,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:12,925 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:12,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:12,925 INFO L85 PathProgramCache]: Analyzing trace with hash 134243784, now seen corresponding path program 17 times [2022-11-18 18:43:12,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:12,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751160255] [2022-11-18 18:43:12,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:43:12,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:12,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:12,927 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:12,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-18 18:43:13,285 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:43:13,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:13,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:43:13,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:13,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 178 [2022-11-18 18:43:13,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:43:13,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:13,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:14,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:15,613 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:15,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:43:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:15,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:15,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:15,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751160255] [2022-11-18 18:43:15,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751160255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:15,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:15,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:43:15,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073495515] [2022-11-18 18:43:15,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:15,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:43:15,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:15,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:43:15,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:15,753 INFO L87 Difference]: Start difference. First operand 363 states and 893 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:15,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:15,835 INFO L93 Difference]: Finished difference Result 386 states and 940 transitions. [2022-11-18 18:43:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:15,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:15,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:15,837 INFO L225 Difference]: With dead ends: 386 [2022-11-18 18:43:15,837 INFO L226 Difference]: Without dead ends: 383 [2022-11-18 18:43:15,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:15,838 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:15,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 44 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 172 Unchecked, 0.1s Time] [2022-11-18 18:43:15,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-18 18:43:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 377. [2022-11-18 18:43:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 373 states have (on average 2.4959785522788205) internal successors, (931), 376 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 931 transitions. [2022-11-18 18:43:15,842 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 931 transitions. Word has length 24 [2022-11-18 18:43:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:15,842 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 931 transitions. [2022-11-18 18:43:15,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 931 transitions. [2022-11-18 18:43:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:15,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:15,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:15,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:16,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:16,044 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash 128794914, now seen corresponding path program 18 times [2022-11-18 18:43:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:16,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517885607] [2022-11-18 18:43:16,044 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:43:16,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:16,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:16,045 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:16,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2022-11-18 18:43:16,341 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-18 18:43:16,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:16,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 18:43:16,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:16,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:43:16,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:43:17,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:17,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:17,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:19,418 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:19,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 179 treesize of output 164 [2022-11-18 18:43:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:19,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:19,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:19,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517885607] [2022-11-18 18:43:19,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517885607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:19,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:19,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:43:19,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843640977] [2022-11-18 18:43:19,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:19,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:43:19,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:19,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:43:19,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:43:19,650 INFO L87 Difference]: Start difference. First operand 377 states and 931 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:19,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:19,762 INFO L93 Difference]: Finished difference Result 399 states and 968 transitions. [2022-11-18 18:43:19,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:43:19,764 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:19,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:19,766 INFO L225 Difference]: With dead ends: 399 [2022-11-18 18:43:19,766 INFO L226 Difference]: Without dead ends: 392 [2022-11-18 18:43:19,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:43:19,767 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 14 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:19,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 45 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 223 Unchecked, 0.1s Time] [2022-11-18 18:43:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-18 18:43:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 358. [2022-11-18 18:43:19,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 354 states have (on average 2.483050847457627) internal successors, (879), 357 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 879 transitions. [2022-11-18 18:43:19,774 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 879 transitions. Word has length 24 [2022-11-18 18:43:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:19,774 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 879 transitions. [2022-11-18 18:43:19,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 879 transitions. [2022-11-18 18:43:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:19,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:19,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:19,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:19,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:19,976 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:19,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:19,976 INFO L85 PathProgramCache]: Analyzing trace with hash 967238276, now seen corresponding path program 19 times [2022-11-18 18:43:19,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:19,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289638300] [2022-11-18 18:43:19,977 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 18:43:19,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:19,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:19,978 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:19,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-18 18:43:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:20,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 18:43:20,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:20,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:43:21,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:21,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:21,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:22,802 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:22,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:43:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:23,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:23,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:23,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289638300] [2022-11-18 18:43:23,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289638300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:23,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:23,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:43:23,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598295837] [2022-11-18 18:43:23,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:23,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:43:23,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:43:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:23,068 INFO L87 Difference]: Start difference. First operand 358 states and 879 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:23,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:23,195 INFO L93 Difference]: Finished difference Result 375 states and 911 transitions. [2022-11-18 18:43:23,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:23,196 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:23,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:23,197 INFO L225 Difference]: With dead ends: 375 [2022-11-18 18:43:23,197 INFO L226 Difference]: Without dead ends: 368 [2022-11-18 18:43:23,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:23,197 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:23,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 57 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 114 Unchecked, 0.1s Time] [2022-11-18 18:43:23,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-18 18:43:23,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 366. [2022-11-18 18:43:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 362 states have (on average 2.4861878453038675) internal successors, (900), 365 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 900 transitions. [2022-11-18 18:43:23,203 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 900 transitions. Word has length 24 [2022-11-18 18:43:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:23,203 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 900 transitions. [2022-11-18 18:43:23,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 900 transitions. [2022-11-18 18:43:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:23,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:23,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:23,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:23,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:23,405 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:23,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2038703546, now seen corresponding path program 20 times [2022-11-18 18:43:23,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:23,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884035138] [2022-11-18 18:43:23,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:43:23,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:23,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:23,406 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:23,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-18 18:43:23,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:43:23,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:23,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 18:43:23,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:23,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:43:24,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:24,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:24,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:26,331 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:26,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:43:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:26,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:26,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:26,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884035138] [2022-11-18 18:43:26,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884035138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:26,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:26,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:43:26,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45227289] [2022-11-18 18:43:26,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:26,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:43:26,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:26,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:43:26,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:26,499 INFO L87 Difference]: Start difference. First operand 366 states and 900 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:26,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:26,586 INFO L93 Difference]: Finished difference Result 397 states and 954 transitions. [2022-11-18 18:43:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:26,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:26,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:26,588 INFO L225 Difference]: With dead ends: 397 [2022-11-18 18:43:26,588 INFO L226 Difference]: Without dead ends: 394 [2022-11-18 18:43:26,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:26,589 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:26,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 57 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 215 Unchecked, 0.1s Time] [2022-11-18 18:43:26,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-18 18:43:26,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 372. [2022-11-18 18:43:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 368 states have (on average 2.4864130434782608) internal successors, (915), 371 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 915 transitions. [2022-11-18 18:43:26,596 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 915 transitions. Word has length 24 [2022-11-18 18:43:26,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:26,596 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 915 transitions. [2022-11-18 18:43:26,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:26,596 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 915 transitions. [2022-11-18 18:43:26,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:26,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:26,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:26,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:26,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:26,797 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:26,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:26,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1846551596, now seen corresponding path program 21 times [2022-11-18 18:43:26,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:26,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583145644] [2022-11-18 18:43:26,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:43:26,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:26,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:26,799 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:26,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-18 18:43:27,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:43:27,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:27,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 18:43:27,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:27,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 126 [2022-11-18 18:43:27,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:27,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:28,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:29,644 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:29,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:43:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:29,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:29,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:29,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583145644] [2022-11-18 18:43:29,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583145644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:29,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:29,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:43:29,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531987987] [2022-11-18 18:43:29,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:29,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:43:29,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:29,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:43:29,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:29,837 INFO L87 Difference]: Start difference. First operand 372 states and 915 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:29,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:29,932 INFO L93 Difference]: Finished difference Result 393 states and 946 transitions. [2022-11-18 18:43:29,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:29,934 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:29,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:29,935 INFO L225 Difference]: With dead ends: 393 [2022-11-18 18:43:29,935 INFO L226 Difference]: Without dead ends: 387 [2022-11-18 18:43:29,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:29,935 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:29,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 174 Unchecked, 0.1s Time] [2022-11-18 18:43:29,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-18 18:43:29,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 364. [2022-11-18 18:43:29,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 360 states have (on average 2.488888888888889) internal successors, (896), 363 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 896 transitions. [2022-11-18 18:43:29,943 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 896 transitions. Word has length 24 [2022-11-18 18:43:29,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:29,943 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 896 transitions. [2022-11-18 18:43:29,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 896 transitions. [2022-11-18 18:43:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:29,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:29,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:29,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:30,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:30,145 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:30,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:30,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2057401336, now seen corresponding path program 22 times [2022-11-18 18:43:30,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:30,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253431755] [2022-11-18 18:43:30,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:43:30,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:30,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:30,147 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:30,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-18 18:43:30,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:43:30,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:30,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:43:30,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:30,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 84 [2022-11-18 18:43:31,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:43:31,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:31,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:31,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:33,217 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:33,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:43:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:33,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:33,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:33,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253431755] [2022-11-18 18:43:33,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253431755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:33,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:33,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:43:33,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707219881] [2022-11-18 18:43:33,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:33,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:43:33,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:43:33,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:33,362 INFO L87 Difference]: Start difference. First operand 364 states and 896 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:33,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:33,455 INFO L93 Difference]: Finished difference Result 386 states and 943 transitions. [2022-11-18 18:43:33,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:33,456 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:33,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:33,457 INFO L225 Difference]: With dead ends: 386 [2022-11-18 18:43:33,457 INFO L226 Difference]: Without dead ends: 380 [2022-11-18 18:43:33,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:33,458 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:33,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 46 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 121 Unchecked, 0.1s Time] [2022-11-18 18:43:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-18 18:43:33,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2022-11-18 18:43:33,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 372 states have (on average 2.489247311827957) internal successors, (926), 375 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 926 transitions. [2022-11-18 18:43:33,466 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 926 transitions. Word has length 24 [2022-11-18 18:43:33,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:33,466 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 926 transitions. [2022-11-18 18:43:33,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 926 transitions. [2022-11-18 18:43:33,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:33,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:33,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:33,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:33,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:33,682 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:33,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:33,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2051952466, now seen corresponding path program 23 times [2022-11-18 18:43:33,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:33,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880878386] [2022-11-18 18:43:33,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:43:33,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:33,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:33,684 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:33,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-18 18:43:34,053 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:43:34,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:34,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 18:43:34,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:34,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 126 [2022-11-18 18:43:34,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:34,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:35,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:36,560 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:36,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:43:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:36,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:36,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:36,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880878386] [2022-11-18 18:43:36,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880878386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:36,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:36,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:43:36,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121573690] [2022-11-18 18:43:36,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:36,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:43:36,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:36,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:43:36,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:36,691 INFO L87 Difference]: Start difference. First operand 376 states and 926 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:36,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:36,782 INFO L93 Difference]: Finished difference Result 412 states and 1001 transitions. [2022-11-18 18:43:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:36,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:36,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:36,784 INFO L225 Difference]: With dead ends: 412 [2022-11-18 18:43:36,784 INFO L226 Difference]: Without dead ends: 410 [2022-11-18 18:43:36,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:36,785 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:36,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 51 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 161 Unchecked, 0.1s Time] [2022-11-18 18:43:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-18 18:43:36,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 376. [2022-11-18 18:43:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 372 states have (on average 2.497311827956989) internal successors, (929), 375 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 929 transitions. [2022-11-18 18:43:36,793 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 929 transitions. Word has length 24 [2022-11-18 18:43:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:36,793 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 929 transitions. [2022-11-18 18:43:36,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:36,794 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 929 transitions. [2022-11-18 18:43:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:36,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:36,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:36,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:37,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:37,010 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:37,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:37,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1369177094, now seen corresponding path program 24 times [2022-11-18 18:43:37,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:37,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985521941] [2022-11-18 18:43:37,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:43:37,011 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:37,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:37,012 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:37,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-18 18:43:37,327 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-18 18:43:37,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:37,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 18:43:37,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:37,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 82 [2022-11-18 18:43:37,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:37,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:38,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:39,570 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:39,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:43:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:39,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:39,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:39,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985521941] [2022-11-18 18:43:39,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985521941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:39,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:39,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:43:39,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950724803] [2022-11-18 18:43:39,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:39,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:43:39,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:39,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:43:39,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:39,721 INFO L87 Difference]: Start difference. First operand 376 states and 929 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:39,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:39,811 INFO L93 Difference]: Finished difference Result 404 states and 977 transitions. [2022-11-18 18:43:39,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:39,812 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:39,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:39,813 INFO L225 Difference]: With dead ends: 404 [2022-11-18 18:43:39,813 INFO L226 Difference]: Without dead ends: 401 [2022-11-18 18:43:39,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:39,814 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:39,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 57 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 183 Unchecked, 0.1s Time] [2022-11-18 18:43:39,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-18 18:43:39,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 376. [2022-11-18 18:43:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 372 states have (on average 2.497311827956989) internal successors, (929), 375 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 929 transitions. [2022-11-18 18:43:39,828 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 929 transitions. Word has length 24 [2022-11-18 18:43:39,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:39,829 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 929 transitions. [2022-11-18 18:43:39,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:39,829 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 929 transitions. [2022-11-18 18:43:39,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:39,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:39,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:39,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Ended with exit code 0 [2022-11-18 18:43:40,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:40,030 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:40,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:40,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1177025144, now seen corresponding path program 25 times [2022-11-18 18:43:40,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:40,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108474284] [2022-11-18 18:43:40,031 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 18:43:40,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:40,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:40,033 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:40,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-18 18:43:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:40,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 18:43:40,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:40,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-11-18 18:43:41,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:41,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:41,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:42,550 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:42,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 179 treesize of output 164 [2022-11-18 18:43:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:42,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:42,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:42,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108474284] [2022-11-18 18:43:42,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108474284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:42,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:42,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:43:42,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453865286] [2022-11-18 18:43:42,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:42,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:43:42,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:42,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:43:42,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:42,710 INFO L87 Difference]: Start difference. First operand 376 states and 929 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:42,780 INFO L93 Difference]: Finished difference Result 428 states and 1045 transitions. [2022-11-18 18:43:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:42,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:42,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:42,781 INFO L225 Difference]: With dead ends: 428 [2022-11-18 18:43:42,781 INFO L226 Difference]: Without dead ends: 423 [2022-11-18 18:43:42,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:42,782 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:42,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 46 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 180 Unchecked, 0.1s Time] [2022-11-18 18:43:42,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-18 18:43:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 378. [2022-11-18 18:43:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 374 states have (on average 2.4973262032085564) internal successors, (934), 377 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 934 transitions. [2022-11-18 18:43:42,786 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 934 transitions. Word has length 24 [2022-11-18 18:43:42,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:42,787 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 934 transitions. [2022-11-18 18:43:42,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 934 transitions. [2022-11-18 18:43:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:42,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:42,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:42,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:42,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:42,988 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:42,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:42,988 INFO L85 PathProgramCache]: Analyzing trace with hash -998425638, now seen corresponding path program 26 times [2022-11-18 18:43:42,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:42,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451039268] [2022-11-18 18:43:42,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:43:42,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:42,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:42,989 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:42,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-18 18:43:43,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:43:43,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:43,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:43:43,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:43,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 265 [2022-11-18 18:43:43,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:43:43,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:43,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:44,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:45,299 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:45,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:43:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:45,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:45,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:45,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451039268] [2022-11-18 18:43:45,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451039268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:45,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:45,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:43:45,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907083004] [2022-11-18 18:43:45,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:45,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:43:45,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:45,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:43:45,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:45,458 INFO L87 Difference]: Start difference. First operand 378 states and 934 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:45,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:45,537 INFO L93 Difference]: Finished difference Result 403 states and 986 transitions. [2022-11-18 18:43:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:45,538 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:45,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:45,538 INFO L225 Difference]: With dead ends: 403 [2022-11-18 18:43:45,538 INFO L226 Difference]: Without dead ends: 399 [2022-11-18 18:43:45,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:45,539 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:45,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 47 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 117 Unchecked, 0.1s Time] [2022-11-18 18:43:45,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-11-18 18:43:45,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 376. [2022-11-18 18:43:45,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 372 states have (on average 2.497311827956989) internal successors, (929), 375 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 929 transitions. [2022-11-18 18:43:45,543 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 929 transitions. Word has length 24 [2022-11-18 18:43:45,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:45,543 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 929 transitions. [2022-11-18 18:43:45,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:45,543 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 929 transitions. [2022-11-18 18:43:45,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:45,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:45,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:45,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:45,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:45,744 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:45,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:45,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2132310552, now seen corresponding path program 27 times [2022-11-18 18:43:45,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:45,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856784003] [2022-11-18 18:43:45,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:43:45,745 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 [2022-11-18 18:43:45,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:45,746 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:45,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2022-11-18 18:43:46,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:43:46,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:46,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 18:43:46,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:46,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 510 treesize of output 494 [2022-11-18 18:43:46,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:46,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:46,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:48,079 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:48,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:43:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:48,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:48,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:48,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856784003] [2022-11-18 18:43:48,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856784003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:48,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:48,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:43:48,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221940275] [2022-11-18 18:43:48,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:48,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:43:48,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:48,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:43:48,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:48,261 INFO L87 Difference]: Start difference. First operand 376 states and 929 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:48,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:48,348 INFO L93 Difference]: Finished difference Result 396 states and 959 transitions. [2022-11-18 18:43:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:48,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:48,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:48,350 INFO L225 Difference]: With dead ends: 396 [2022-11-18 18:43:48,350 INFO L226 Difference]: Without dead ends: 391 [2022-11-18 18:43:48,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:48,351 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:48,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 129 Unchecked, 0.1s Time] [2022-11-18 18:43:48,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-18 18:43:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 368. [2022-11-18 18:43:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 364 states have (on average 2.489010989010989) internal successors, (906), 367 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:48,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 906 transitions. [2022-11-18 18:43:48,362 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 906 transitions. Word has length 24 [2022-11-18 18:43:48,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:48,362 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 906 transitions. [2022-11-18 18:43:48,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 906 transitions. [2022-11-18 18:43:48,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:48,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:48,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:48,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:48,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:48,564 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:48,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash -655347786, now seen corresponding path program 28 times [2022-11-18 18:43:48,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:48,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046830752] [2022-11-18 18:43:48,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:43:48,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:48,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:48,566 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:48,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-18 18:43:49,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:43:49,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:49,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 18:43:49,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:49,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:43:49,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:49,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:49,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:51,195 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:51,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:43:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:51,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:51,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:51,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046830752] [2022-11-18 18:43:51,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046830752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:51,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:51,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:43:51,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339514181] [2022-11-18 18:43:51,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:51,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:43:51,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:51,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:43:51,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:51,334 INFO L87 Difference]: Start difference. First operand 368 states and 906 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:51,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:51,429 INFO L93 Difference]: Finished difference Result 404 states and 976 transitions. [2022-11-18 18:43:51,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:51,430 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:51,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:51,431 INFO L225 Difference]: With dead ends: 404 [2022-11-18 18:43:51,431 INFO L226 Difference]: Without dead ends: 401 [2022-11-18 18:43:51,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:43:51,431 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:51,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 47 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 154 Unchecked, 0.1s Time] [2022-11-18 18:43:51,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-18 18:43:51,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 374. [2022-11-18 18:43:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 370 states have (on average 2.4891891891891893) internal successors, (921), 373 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 921 transitions. [2022-11-18 18:43:51,437 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 921 transitions. Word has length 24 [2022-11-18 18:43:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:51,438 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 921 transitions. [2022-11-18 18:43:51,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:51,438 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 921 transitions. [2022-11-18 18:43:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:51,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:51,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:51,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:51,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:51,653 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:51,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:51,653 INFO L85 PathProgramCache]: Analyzing trace with hash -463195836, now seen corresponding path program 29 times [2022-11-18 18:43:51,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:51,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241899220] [2022-11-18 18:43:51,654 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:43:51,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:51,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:51,655 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:51,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-18 18:43:52,044 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:43:52,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:52,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:43:52,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:52,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:43:52,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:43:52,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:52,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:53,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:54,527 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:54,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 179 treesize of output 164 [2022-11-18 18:43:54,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:54,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:54,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:54,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241899220] [2022-11-18 18:43:54,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241899220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:54,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:54,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:43:54,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189318796] [2022-11-18 18:43:54,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:54,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:43:54,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:54,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:43:54,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:43:54,768 INFO L87 Difference]: Start difference. First operand 374 states and 921 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:54,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:54,874 INFO L93 Difference]: Finished difference Result 400 states and 968 transitions. [2022-11-18 18:43:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:43:54,876 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:54,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:54,877 INFO L225 Difference]: With dead ends: 400 [2022-11-18 18:43:54,877 INFO L226 Difference]: Without dead ends: 395 [2022-11-18 18:43:54,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:43:54,878 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:54,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 58 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 277 Unchecked, 0.1s Time] [2022-11-18 18:43:54,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-11-18 18:43:54,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 370. [2022-11-18 18:43:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 366 states have (on average 2.489071038251366) internal successors, (911), 369 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:54,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 911 transitions. [2022-11-18 18:43:54,889 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 911 transitions. Word has length 24 [2022-11-18 18:43:54,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:54,890 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 911 transitions. [2022-11-18 18:43:54,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 911 transitions. [2022-11-18 18:43:54,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:54,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:54,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:54,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Ended with exit code 0 [2022-11-18 18:43:55,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:55,105 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:55,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:55,105 INFO L85 PathProgramCache]: Analyzing trace with hash -794122190, now seen corresponding path program 30 times [2022-11-18 18:43:55,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:55,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035848621] [2022-11-18 18:43:55,106 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:43:55,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:55,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:55,108 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:55,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-18 18:43:55,663 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-18 18:43:55,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:55,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:43:55,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:55,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:43:56,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:43:56,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:56,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:56,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:43:58,144 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:43:58,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 179 treesize of output 164 [2022-11-18 18:43:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:43:58,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:58,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:58,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035848621] [2022-11-18 18:43:58,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035848621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:58,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:58,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:43:58,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819994193] [2022-11-18 18:43:58,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:58,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:43:58,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:58,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:43:58,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:43:58,381 INFO L87 Difference]: Start difference. First operand 370 states and 911 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:58,479 INFO L93 Difference]: Finished difference Result 388 states and 944 transitions. [2022-11-18 18:43:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:43:58,480 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:43:58,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:58,481 INFO L225 Difference]: With dead ends: 388 [2022-11-18 18:43:58,481 INFO L226 Difference]: Without dead ends: 382 [2022-11-18 18:43:58,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:43:58,481 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:58,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 58 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 161 Unchecked, 0.1s Time] [2022-11-18 18:43:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-18 18:43:58,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 366. [2022-11-18 18:43:58,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 362 states have (on average 2.483425414364641) internal successors, (899), 365 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 899 transitions. [2022-11-18 18:43:58,488 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 899 transitions. Word has length 24 [2022-11-18 18:43:58,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:58,488 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 899 transitions. [2022-11-18 18:43:58,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:58,488 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 899 transitions. [2022-11-18 18:43:58,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:43:58,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:58,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:58,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Ended with exit code 0 [2022-11-18 18:43:58,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:58,690 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:43:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash -75908474, now seen corresponding path program 31 times [2022-11-18 18:43:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:58,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877265500] [2022-11-18 18:43:58,691 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 18:43:58,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:58,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:58,692 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:58,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2022-11-18 18:43:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:59,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 18:43:59,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:59,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:44:00,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:00,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:00,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:01,915 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:44:01,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:44:02,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:02,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:02,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:02,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877265500] [2022-11-18 18:44:02,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877265500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:02,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:02,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:44:02,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365588271] [2022-11-18 18:44:02,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:02,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:44:02,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:02,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:44:02,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:02,087 INFO L87 Difference]: Start difference. First operand 366 states and 899 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:02,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:02,192 INFO L93 Difference]: Finished difference Result 395 states and 963 transitions. [2022-11-18 18:44:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:44:02,193 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:02,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:02,194 INFO L225 Difference]: With dead ends: 395 [2022-11-18 18:44:02,194 INFO L226 Difference]: Without dead ends: 391 [2022-11-18 18:44:02,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:02,195 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:02,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 47 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 139 Unchecked, 0.1s Time] [2022-11-18 18:44:02,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-18 18:44:02,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 378. [2022-11-18 18:44:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 374 states have (on average 2.483957219251337) internal successors, (929), 377 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 929 transitions. [2022-11-18 18:44:02,201 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 929 transitions. Word has length 24 [2022-11-18 18:44:02,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:02,202 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 929 transitions. [2022-11-18 18:44:02,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 929 transitions. [2022-11-18 18:44:02,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:02,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:02,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:02,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Ended with exit code 0 [2022-11-18 18:44:02,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:02,403 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:02,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash -81357344, now seen corresponding path program 32 times [2022-11-18 18:44:02,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:02,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319652707] [2022-11-18 18:44:02,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:44:02,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:02,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:02,406 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:02,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-18 18:44:02,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:44:02,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:02,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 18:44:02,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:02,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:44:03,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:03,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:03,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:05,155 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:44:05,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:44:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:05,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:05,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:05,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319652707] [2022-11-18 18:44:05,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319652707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:05,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:05,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:44:05,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613775275] [2022-11-18 18:44:05,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:05,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:44:05,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:05,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:44:05,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:05,288 INFO L87 Difference]: Start difference. First operand 378 states and 929 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:05,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:05,382 INFO L93 Difference]: Finished difference Result 394 states and 960 transitions. [2022-11-18 18:44:05,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:44:05,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:05,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:05,385 INFO L225 Difference]: With dead ends: 394 [2022-11-18 18:44:05,385 INFO L226 Difference]: Without dead ends: 392 [2022-11-18 18:44:05,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:05,385 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:05,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 57 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 171 Unchecked, 0.1s Time] [2022-11-18 18:44:05,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-18 18:44:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 374. [2022-11-18 18:44:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 370 states have (on average 2.4891891891891893) internal successors, (921), 373 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:05,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 921 transitions. [2022-11-18 18:44:05,399 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 921 transitions. Word has length 24 [2022-11-18 18:44:05,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:05,399 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 921 transitions. [2022-11-18 18:44:05,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:05,400 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 921 transitions. [2022-11-18 18:44:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:05,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:05,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:05,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:05,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:05,615 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:05,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:05,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1047987630, now seen corresponding path program 33 times [2022-11-18 18:44:05,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:05,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336347229] [2022-11-18 18:44:05,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:44:05,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:05,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:05,617 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:05,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-18 18:44:05,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:44:05,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:05,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:44:05,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:05,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-11-18 18:44:06,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:44:06,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:06,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:06,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:07,927 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:44:07,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 179 treesize of output 164 [2022-11-18 18:44:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:08,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:08,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:08,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336347229] [2022-11-18 18:44:08,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336347229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:08,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:08,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:44:08,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387543773] [2022-11-18 18:44:08,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:08,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:44:08,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:08,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:44:08,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:08,100 INFO L87 Difference]: Start difference. First operand 374 states and 921 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:08,172 INFO L93 Difference]: Finished difference Result 389 states and 951 transitions. [2022-11-18 18:44:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:44:08,173 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:08,173 INFO L225 Difference]: With dead ends: 389 [2022-11-18 18:44:08,173 INFO L226 Difference]: Without dead ends: 384 [2022-11-18 18:44:08,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:08,174 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:08,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 46 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 100 Unchecked, 0.1s Time] [2022-11-18 18:44:08,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-18 18:44:08,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 372. [2022-11-18 18:44:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 368 states have (on average 2.489130434782609) internal successors, (916), 371 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 916 transitions. [2022-11-18 18:44:08,179 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 916 transitions. Word has length 24 [2022-11-18 18:44:08,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:08,179 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 916 transitions. [2022-11-18 18:44:08,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:08,179 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 916 transitions. [2022-11-18 18:44:08,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:08,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:08,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:08,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:08,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:08,381 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:08,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:08,381 INFO L85 PathProgramCache]: Analyzing trace with hash 792480392, now seen corresponding path program 34 times [2022-11-18 18:44:08,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:08,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061602544] [2022-11-18 18:44:08,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:44:08,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:08,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:08,382 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:08,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-18 18:44:08,828 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:44:08,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:08,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 18:44:08,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:08,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:44:09,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:44:09,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:09,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:09,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:10,985 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:44:10,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 179 treesize of output 164 [2022-11-18 18:44:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:11,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:11,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:11,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061602544] [2022-11-18 18:44:11,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061602544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:11,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:11,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:44:11,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330512735] [2022-11-18 18:44:11,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:11,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:44:11,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:11,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:44:11,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:44:11,138 INFO L87 Difference]: Start difference. First operand 372 states and 916 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:11,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:11,218 INFO L93 Difference]: Finished difference Result 396 states and 966 transitions. [2022-11-18 18:44:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:44:11,219 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:11,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:11,220 INFO L225 Difference]: With dead ends: 396 [2022-11-18 18:44:11,220 INFO L226 Difference]: Without dead ends: 393 [2022-11-18 18:44:11,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:44:11,220 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:11,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 54 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 122 Unchecked, 0.1s Time] [2022-11-18 18:44:11,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-18 18:44:11,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 378. [2022-11-18 18:44:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 374 states have (on average 2.486631016042781) internal successors, (930), 377 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 930 transitions. [2022-11-18 18:44:11,225 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 930 transitions. Word has length 24 [2022-11-18 18:44:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:11,225 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 930 transitions. [2022-11-18 18:44:11,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 930 transitions. [2022-11-18 18:44:11,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:11,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:11,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:11,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:11,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:11,426 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:11,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash 787031522, now seen corresponding path program 35 times [2022-11-18 18:44:11,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:11,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306616640] [2022-11-18 18:44:11,427 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:44:11,427 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 [2022-11-18 18:44:11,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:11,428 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:11,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2022-11-18 18:44:11,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:44:11,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:11,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 18:44:11,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:11,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:44:12,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:44:12,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:12,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:12,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:14,124 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:44:14,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:44:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:14,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:14,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:14,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306616640] [2022-11-18 18:44:14,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306616640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:14,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:14,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:44:14,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286930272] [2022-11-18 18:44:14,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:14,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:44:14,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:14,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:44:14,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:44:14,250 INFO L87 Difference]: Start difference. First operand 378 states and 930 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:14,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:14,316 INFO L93 Difference]: Finished difference Result 398 states and 968 transitions. [2022-11-18 18:44:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:44:14,317 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:14,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:14,318 INFO L225 Difference]: With dead ends: 398 [2022-11-18 18:44:14,318 INFO L226 Difference]: Without dead ends: 394 [2022-11-18 18:44:14,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:44:14,318 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 226 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:14,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 58 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 226 Unchecked, 0.1s Time] [2022-11-18 18:44:14,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-18 18:44:14,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 370. [2022-11-18 18:44:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 366 states have (on average 2.4836065573770494) internal successors, (909), 369 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 909 transitions. [2022-11-18 18:44:14,323 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 909 transitions. Word has length 24 [2022-11-18 18:44:14,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:14,324 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 909 transitions. [2022-11-18 18:44:14,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 909 transitions. [2022-11-18 18:44:14,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:14,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:14,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:14,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:14,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:14,525 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:14,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1795259254, now seen corresponding path program 36 times [2022-11-18 18:44:14,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:14,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883974847] [2022-11-18 18:44:14,526 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:44:14,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:14,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:14,527 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:14,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-18 18:44:14,858 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-18 18:44:14,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:14,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 18:44:14,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:14,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2022-11-18 18:44:15,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:15,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:15,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:16,906 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:44:16,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 179 treesize of output 164 [2022-11-18 18:44:17,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:17,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:17,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:17,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883974847] [2022-11-18 18:44:17,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883974847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:17,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:17,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:44:17,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73874952] [2022-11-18 18:44:17,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:17,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:44:17,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:17,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:44:17,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:17,047 INFO L87 Difference]: Start difference. First operand 370 states and 909 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:17,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:17,130 INFO L93 Difference]: Finished difference Result 400 states and 972 transitions. [2022-11-18 18:44:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:44:17,134 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:17,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:17,135 INFO L225 Difference]: With dead ends: 400 [2022-11-18 18:44:17,135 INFO L226 Difference]: Without dead ends: 396 [2022-11-18 18:44:17,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:17,135 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:17,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 47 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 127 Unchecked, 0.1s Time] [2022-11-18 18:44:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-11-18 18:44:17,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 380. [2022-11-18 18:44:17,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 376 states have (on average 2.4680851063829787) internal successors, (928), 379 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:17,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 928 transitions. [2022-11-18 18:44:17,143 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 928 transitions. Word has length 24 [2022-11-18 18:44:17,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:17,143 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 928 transitions. [2022-11-18 18:44:17,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:17,143 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 928 transitions. [2022-11-18 18:44:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:17,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:17,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:17,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:17,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:17,357 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:17,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:17,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1789810384, now seen corresponding path program 37 times [2022-11-18 18:44:17,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:17,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433782698] [2022-11-18 18:44:17,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 18:44:17,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:17,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:17,359 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:17,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-18 18:44:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:17,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 18:44:17,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:17,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 82 [2022-11-18 18:44:18,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:18,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:18,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:20,102 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:44:20,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 179 treesize of output 164 [2022-11-18 18:44:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:20,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:20,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:20,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433782698] [2022-11-18 18:44:20,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433782698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:20,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:20,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:44:20,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726910060] [2022-11-18 18:44:20,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:20,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:44:20,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:20,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:44:20,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:20,296 INFO L87 Difference]: Start difference. First operand 380 states and 928 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:20,425 INFO L93 Difference]: Finished difference Result 400 states and 971 transitions. [2022-11-18 18:44:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:44:20,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:20,427 INFO L225 Difference]: With dead ends: 400 [2022-11-18 18:44:20,427 INFO L226 Difference]: Without dead ends: 398 [2022-11-18 18:44:20,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:20,428 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:20,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 51 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 161 Unchecked, 0.1s Time] [2022-11-18 18:44:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-18 18:44:20,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 374. [2022-11-18 18:44:20,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 370 states have (on average 2.472972972972973) internal successors, (915), 373 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:20,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 915 transitions. [2022-11-18 18:44:20,438 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 915 transitions. Word has length 24 [2022-11-18 18:44:20,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:20,438 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 915 transitions. [2022-11-18 18:44:20,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:20,439 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 915 transitions. [2022-11-18 18:44:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:20,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:20,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:20,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (91)] Ended with exit code 0 [2022-11-18 18:44:20,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:20,640 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:20,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1971122572, now seen corresponding path program 38 times [2022-11-18 18:44:20,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:20,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241816449] [2022-11-18 18:44:20,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:44:20,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:20,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:20,643 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:20,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2022-11-18 18:44:21,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:44:21,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:21,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 18:44:21,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:21,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:44:22,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:22,361 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-18 18:44:22,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 182 treesize of output 163 [2022-11-18 18:44:22,395 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:22,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 71 [2022-11-18 18:44:22,729 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:22,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 27 [2022-11-18 18:44:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:22,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:22,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:22,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241816449] [2022-11-18 18:44:22,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241816449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:22,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:22,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:44:22,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819953119] [2022-11-18 18:44:22,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:22,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:44:22,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:44:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:22,984 INFO L87 Difference]: Start difference. First operand 374 states and 915 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:23,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:23,264 INFO L93 Difference]: Finished difference Result 393 states and 946 transitions. [2022-11-18 18:44:23,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:44:23,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:23,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:23,267 INFO L225 Difference]: With dead ends: 393 [2022-11-18 18:44:23,267 INFO L226 Difference]: Without dead ends: 386 [2022-11-18 18:44:23,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:44:23,267 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:23,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 41 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 136 Unchecked, 0.2s Time] [2022-11-18 18:44:23,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-18 18:44:23,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-11-18 18:44:23,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 382 states have (on average 2.4581151832460733) internal successors, (939), 385 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 939 transitions. [2022-11-18 18:44:23,272 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 939 transitions. Word has length 24 [2022-11-18 18:44:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:23,273 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 939 transitions. [2022-11-18 18:44:23,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 939 transitions. [2022-11-18 18:44:23,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:23,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:23,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:23,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:23,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:23,474 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:23,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:23,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1034819250, now seen corresponding path program 39 times [2022-11-18 18:44:23,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:23,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388641840] [2022-11-18 18:44:23,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:44:23,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:23,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:23,476 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:23,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2022-11-18 18:44:23,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:44:23,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:23,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 18:44:23,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:25,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:25,168 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-18 18:44:25,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 182 treesize of output 163 [2022-11-18 18:44:25,198 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:25,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 71 [2022-11-18 18:44:25,741 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:25,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 27 [2022-11-18 18:44:25,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:25,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:25,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:25,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388641840] [2022-11-18 18:44:25,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388641840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:25,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:25,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:44:25,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935054686] [2022-11-18 18:44:25,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:25,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:44:25,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:25,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:44:25,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:25,894 INFO L87 Difference]: Start difference. First operand 386 states and 939 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:26,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:26,195 INFO L93 Difference]: Finished difference Result 404 states and 969 transitions. [2022-11-18 18:44:26,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:44:26,197 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:26,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:26,197 INFO L225 Difference]: With dead ends: 404 [2022-11-18 18:44:26,197 INFO L226 Difference]: Without dead ends: 398 [2022-11-18 18:44:26,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:44:26,198 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 240 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:26,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 37 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 240 Unchecked, 0.2s Time] [2022-11-18 18:44:26,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-18 18:44:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 381. [2022-11-18 18:44:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 377 states have (on average 2.4694960212201593) internal successors, (931), 380 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 931 transitions. [2022-11-18 18:44:26,205 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 931 transitions. Word has length 24 [2022-11-18 18:44:26,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:26,205 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 931 transitions. [2022-11-18 18:44:26,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 931 transitions. [2022-11-18 18:44:26,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:26,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:26,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:26,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:26,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:26,407 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:26,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:26,407 INFO L85 PathProgramCache]: Analyzing trace with hash 224872004, now seen corresponding path program 40 times [2022-11-18 18:44:26,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:26,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437895798] [2022-11-18 18:44:26,408 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:44:26,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:26,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:26,409 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:26,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2022-11-18 18:44:26,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:44:26,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:26,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:44:26,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:27,135 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:27,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 18:44:27,374 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:27,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 27 [2022-11-18 18:44:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:27,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:27,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:27,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437895798] [2022-11-18 18:44:27,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437895798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:27,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:27,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:44:27,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24335966] [2022-11-18 18:44:27,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:27,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:44:27,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:27,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:44:27,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:44:27,581 INFO L87 Difference]: Start difference. First operand 381 states and 931 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:28,158 INFO L93 Difference]: Finished difference Result 438 states and 1054 transitions. [2022-11-18 18:44:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:44:28,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:28,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:28,160 INFO L225 Difference]: With dead ends: 438 [2022-11-18 18:44:28,160 INFO L226 Difference]: Without dead ends: 431 [2022-11-18 18:44:28,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:44:28,165 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 25 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:28,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 35 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 222 Unchecked, 0.6s Time] [2022-11-18 18:44:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-11-18 18:44:28,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 383. [2022-11-18 18:44:28,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 379 states have (on average 2.467018469656992) internal successors, (935), 382 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:28,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 935 transitions. [2022-11-18 18:44:28,172 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 935 transitions. Word has length 24 [2022-11-18 18:44:28,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:28,172 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 935 transitions. [2022-11-18 18:44:28,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:28,172 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 935 transitions. [2022-11-18 18:44:28,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:28,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:28,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:28,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:28,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:28,374 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:28,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:28,374 INFO L85 PathProgramCache]: Analyzing trace with hash 223046494, now seen corresponding path program 41 times [2022-11-18 18:44:28,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:28,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014297436] [2022-11-18 18:44:28,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:44:28,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:28,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:28,375 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:28,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2022-11-18 18:44:28,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:44:28,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:28,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:44:28,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:28,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-11-18 18:44:29,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:44:29,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 18:44:30,311 INFO L321 Elim1Store]: treesize reduction 207, result has 37.8 percent of original size [2022-11-18 18:44:30,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 170 [2022-11-18 18:44:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:30,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:30,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:30,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014297436] [2022-11-18 18:44:30,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014297436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:30,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:30,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:44:30,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575622585] [2022-11-18 18:44:30,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:30,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:44:30,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:30,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:44:30,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:44:30,546 INFO L87 Difference]: Start difference. First operand 383 states and 935 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:31,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:31,195 INFO L93 Difference]: Finished difference Result 478 states and 1146 transitions. [2022-11-18 18:44:31,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:44:31,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:31,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:31,197 INFO L225 Difference]: With dead ends: 478 [2022-11-18 18:44:31,197 INFO L226 Difference]: Without dead ends: 471 [2022-11-18 18:44:31,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:31,198 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 34 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:31,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 42 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 246 Unchecked, 0.6s Time] [2022-11-18 18:44:31,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-11-18 18:44:31,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 377. [2022-11-18 18:44:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 373 states have (on average 2.479892761394102) internal successors, (925), 376 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 925 transitions. [2022-11-18 18:44:31,203 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 925 transitions. Word has length 24 [2022-11-18 18:44:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:31,203 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 925 transitions. [2022-11-18 18:44:31,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 925 transitions. [2022-11-18 18:44:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:31,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:31,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:31,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:31,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:31,405 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:31,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:31,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1801545004, now seen corresponding path program 42 times [2022-11-18 18:44:31,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:31,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920247499] [2022-11-18 18:44:31,405 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:44:31,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:31,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:31,410 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:31,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-18 18:44:31,784 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-18 18:44:31,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:31,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:44:31,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:32,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:32,807 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-18 18:44:32,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 130 [2022-11-18 18:44:32,821 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:32,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 19 [2022-11-18 18:44:33,151 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:33,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 21 [2022-11-18 18:44:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:33,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:33,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:33,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920247499] [2022-11-18 18:44:33,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920247499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:33,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:33,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:44:33,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209571111] [2022-11-18 18:44:33,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:33,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:44:33,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:33,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:44:33,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:33,364 INFO L87 Difference]: Start difference. First operand 377 states and 925 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:33,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:33,622 INFO L93 Difference]: Finished difference Result 391 states and 942 transitions. [2022-11-18 18:44:33,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:44:33,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:33,624 INFO L225 Difference]: With dead ends: 391 [2022-11-18 18:44:33,624 INFO L226 Difference]: Without dead ends: 384 [2022-11-18 18:44:33,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:44:33,625 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:33,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 37 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 141 Unchecked, 0.2s Time] [2022-11-18 18:44:33,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-18 18:44:33,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2022-11-18 18:44:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 378 states have (on average 2.4682539682539684) internal successors, (933), 381 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 933 transitions. [2022-11-18 18:44:33,630 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 933 transitions. Word has length 24 [2022-11-18 18:44:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:33,630 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 933 transitions. [2022-11-18 18:44:33,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:33,630 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 933 transitions. [2022-11-18 18:44:33,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:33,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:33,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:33,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:33,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:33,831 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:33,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash -512519530, now seen corresponding path program 43 times [2022-11-18 18:44:33,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:33,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876145316] [2022-11-18 18:44:33,832 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 18:44:33,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:33,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:33,833 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:33,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2022-11-18 18:44:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:34,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:44:34,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:35,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:35,211 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-18 18:44:35,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 130 [2022-11-18 18:44:35,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:35,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 19 [2022-11-18 18:44:35,762 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:35,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 21 [2022-11-18 18:44:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:35,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:35,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:35,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876145316] [2022-11-18 18:44:35,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876145316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:35,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:35,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:44:35,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693884664] [2022-11-18 18:44:35,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:35,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:44:35,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:35,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:44:35,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:35,901 INFO L87 Difference]: Start difference. First operand 382 states and 933 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:36,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:36,131 INFO L93 Difference]: Finished difference Result 400 states and 962 transitions. [2022-11-18 18:44:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:44:36,132 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:36,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:36,133 INFO L225 Difference]: With dead ends: 400 [2022-11-18 18:44:36,133 INFO L226 Difference]: Without dead ends: 394 [2022-11-18 18:44:36,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:44:36,133 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:36,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 41 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 211 Unchecked, 0.2s Time] [2022-11-18 18:44:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-18 18:44:36,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 390. [2022-11-18 18:44:36,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 386 states have (on average 2.4585492227979273) internal successors, (949), 389 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 949 transitions. [2022-11-18 18:44:36,137 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 949 transitions. Word has length 24 [2022-11-18 18:44:36,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:36,138 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 949 transitions. [2022-11-18 18:44:36,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:36,138 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 949 transitions. [2022-11-18 18:44:36,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:36,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:36,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:36,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:36,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:36,339 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:36,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:36,339 INFO L85 PathProgramCache]: Analyzing trace with hash -517968400, now seen corresponding path program 44 times [2022-11-18 18:44:36,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:36,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543042400] [2022-11-18 18:44:36,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:44:36,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:36,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:36,341 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:36,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2022-11-18 18:44:36,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:44:36,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:36,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:44:36,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:37,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:44:37,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:37,717 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-18 18:44:37,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 182 treesize of output 163 [2022-11-18 18:44:37,745 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:37,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 71 [2022-11-18 18:44:38,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:38,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 27 [2022-11-18 18:44:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:44:38,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:38,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:38,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543042400] [2022-11-18 18:44:38,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543042400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:38,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:38,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:44:38,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823603357] [2022-11-18 18:44:38,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:38,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:44:38,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:38,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:44:38,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:44:38,352 INFO L87 Difference]: Start difference. First operand 390 states and 949 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:38,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:38,575 INFO L93 Difference]: Finished difference Result 397 states and 955 transitions. [2022-11-18 18:44:38,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:44:38,576 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 18:44:38,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:38,577 INFO L225 Difference]: With dead ends: 397 [2022-11-18 18:44:38,577 INFO L226 Difference]: Without dead ends: 395 [2022-11-18 18:44:38,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:44:38,578 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:38,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 41 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 172 Unchecked, 0.1s Time] [2022-11-18 18:44:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-11-18 18:44:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 371. [2022-11-18 18:44:38,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 367 states have (on average 2.4795640326975477) internal successors, (910), 370 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:38,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 910 transitions. [2022-11-18 18:44:38,582 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 910 transitions. Word has length 24 [2022-11-18 18:44:38,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:38,582 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 910 transitions. [2022-11-18 18:44:38,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:38,583 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 910 transitions. [2022-11-18 18:44:38,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:44:38,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:38,583 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1] [2022-11-18 18:44:38,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:38,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:38,784 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:44:38,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:38,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1322446251, now seen corresponding path program 4 times [2022-11-18 18:44:38,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:38,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121151245] [2022-11-18 18:44:38,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:44:38,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:38,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:38,785 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:38,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2022-11-18 18:44:39,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:44:39,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:39,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 18:44:39,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:39,305 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:44:39,305 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:44:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:44:41,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:44:58,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:44:58,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121151245] [2022-11-18 18:44:58,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121151245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:58,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:44:58,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2022-11-18 18:44:58,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610254407] [2022-11-18 18:44:58,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:58,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 18:44:58,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:44:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 18:44:58,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 18:44:58,049 INFO L87 Difference]: Start difference. First operand 371 states and 910 transitions. Second operand has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:45:38,760 WARN L233 SmtUtils]: Spent 19.66s on a formula simplification that was a NOOP. DAG size: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:46:05,607 WARN L233 SmtUtils]: Spent 23.35s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:46:07,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:09,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:11,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:13,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:15,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:17,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:19,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:21,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:23,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:25,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:27,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:29,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:31,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:33,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:35,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:37,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:39,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:41,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:43,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:45,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:47,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:46:49,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:47:12,022 WARN L233 SmtUtils]: Spent 19.10s on a formula simplification that was a NOOP. DAG size: 232 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:47:31,227 WARN L233 SmtUtils]: Spent 15.62s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:47:43,336 WARN L233 SmtUtils]: Spent 7.99s on a formula simplification that was a NOOP. DAG size: 211 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:47:57,234 WARN L233 SmtUtils]: Spent 10.27s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:48:08,747 WARN L233 SmtUtils]: Spent 8.59s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:48:20,247 WARN L233 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:48:31,773 WARN L233 SmtUtils]: Spent 8.59s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:48:39,285 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:48:53,399 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:49:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:25,030 INFO L93 Difference]: Finished difference Result 5291 states and 14992 transitions. [2022-11-18 18:49:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 18:49:25,033 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 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) Word has length 24 [2022-11-18 18:49:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:25,043 INFO L225 Difference]: With dead ends: 5291 [2022-11-18 18:49:25,043 INFO L226 Difference]: Without dead ends: 5291 [2022-11-18 18:49:25,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 202.6s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-11-18 18:49:25,044 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 6562 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 12430 mSolverCounterSat, 1266 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6562 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 13718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1266 IncrementalHoareTripleChecker+Valid, 12430 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:25,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6562 Valid, 1584 Invalid, 13718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1266 Valid, 12430 Invalid, 22 Unknown, 0 Unchecked, 80.6s Time] [2022-11-18 18:49:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2022-11-18 18:49:25,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 395. [2022-11-18 18:49:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 391 states have (on average 2.450127877237852) internal successors, (958), 394 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 958 transitions. [2022-11-18 18:49:25,076 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 958 transitions. Word has length 24 [2022-11-18 18:49:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:25,077 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 958 transitions. [2022-11-18 18:49:25,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:25,077 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 958 transitions. [2022-11-18 18:49:25,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 18:49:25,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:25,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:25,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (99)] Ended with exit code 0 [2022-11-18 18:49:25,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:25,278 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:49:25,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:25,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1813536948, now seen corresponding path program 1 times [2022-11-18 18:49:25,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:49:25,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141988310] [2022-11-18 18:49:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:25,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:25,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:49:25,280 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:49:25,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2022-11-18 18:49:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:25,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:49:25,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:26,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:49:26,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:27,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:49:27,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141988310] [2022-11-18 18:49:27,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141988310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:27,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:27,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-18 18:49:27,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474170260] [2022-11-18 18:49:27,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:27,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 18:49:27,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:49:27,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 18:49:27,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:49:27,413 INFO L87 Difference]: Start difference. First operand 395 states and 958 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:30,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:30,587 INFO L93 Difference]: Finished difference Result 748 states and 1889 transitions. [2022-11-18 18:49:30,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:49:30,589 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 18:49:30,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:30,590 INFO L225 Difference]: With dead ends: 748 [2022-11-18 18:49:30,590 INFO L226 Difference]: Without dead ends: 616 [2022-11-18 18:49:30,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:49:30,590 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 325 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:30,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 26 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 18:49:30,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-11-18 18:49:30,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 520. [2022-11-18 18:49:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 516 states have (on average 2.5930232558139537) internal successors, (1338), 519 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 1338 transitions. [2022-11-18 18:49:30,600 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 1338 transitions. Word has length 25 [2022-11-18 18:49:30,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:30,601 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 1338 transitions. [2022-11-18 18:49:30,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:30,601 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 1338 transitions. [2022-11-18 18:49:30,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 18:49:30,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:30,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:30,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:30,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:30,802 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:49:30,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:30,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1542659373, now seen corresponding path program 1 times [2022-11-18 18:49:30,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:49:30,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29008156] [2022-11-18 18:49:30,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:30,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:30,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:49:30,804 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:49:30,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2022-11-18 18:49:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:31,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:49:31,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:49:31,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:49:31,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:49:31,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29008156] [2022-11-18 18:49:31,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29008156] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:31,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:31,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-18 18:49:31,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469160417] [2022-11-18 18:49:31,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:31,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:31,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:49:31,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:31,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:31,879 INFO L87 Difference]: Start difference. First operand 520 states and 1338 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:32,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:32,546 INFO L93 Difference]: Finished difference Result 811 states and 2037 transitions. [2022-11-18 18:49:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:49:32,548 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 18:49:32,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:32,549 INFO L225 Difference]: With dead ends: 811 [2022-11-18 18:49:32,549 INFO L226 Difference]: Without dead ends: 700 [2022-11-18 18:49:32,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:32,550 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 80 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:32,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 27 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 61 Unchecked, 0.7s Time] [2022-11-18 18:49:32,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-11-18 18:49:32,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 584. [2022-11-18 18:49:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 580 states have (on average 2.5448275862068965) internal successors, (1476), 583 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:32,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1476 transitions. [2022-11-18 18:49:32,560 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1476 transitions. Word has length 25 [2022-11-18 18:49:32,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:32,560 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 1476 transitions. [2022-11-18 18:49:32,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:32,560 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1476 transitions. [2022-11-18 18:49:32,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 18:49:32,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:32,561 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:32,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (101)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:32,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:32,762 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 18:49:32,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:32,762 INFO L85 PathProgramCache]: Analyzing trace with hash -28149193, now seen corresponding path program 2 times [2022-11-18 18:49:32,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:49:32,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373774322] [2022-11-18 18:49:32,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:49:32,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:32,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:49:32,764 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:49:32,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3633c95f-de31-4cad-be15-77df920c2312/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (102)] Waiting until timeout for monitored process