./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6560568361eacef24363f4e5a58f5226b4c8bc2851167e042d4f8ce61eb0aa48 --- 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-38b53e6 [2022-11-26 00:14:55,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:14:55,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:14:55,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:14:55,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:14:55,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:14:55,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:14:55,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:14:55,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:14:55,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:14:55,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:14:55,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:14:55,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:14:55,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:14:55,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:14:55,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:14:55,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:14:55,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:14:55,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:14:55,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:14:55,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:14:55,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:14:55,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:14:55,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:14:55,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:14:55,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:14:55,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:14:55,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:14:55,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:14:55,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:14:55,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:14:55,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:14:55,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:14:55,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:14:55,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:14:55,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:14:55,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:14:55,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:14:55,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:14:55,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:14:55,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:14:55,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-26 00:14:55,614 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:14:55,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:14:55,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:14:55,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:14:55,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:14:55,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:14:55,619 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:14:55,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:14:55,620 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:14:55,620 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:14:55,621 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:14:55,622 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:14:55,622 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:14:55,622 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:14:55,623 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:14:55,623 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:14:55,623 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:14:55,623 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:14:55,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 00:14:55,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 00:14:55,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:14:55,625 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:14:55,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:14:55,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:14:55,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:14:55,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:14:55,626 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 00:14:55,626 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 00:14:55,627 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 00:14:55,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:14:55,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:14:55,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:14:55,628 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:14:55,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:14:55,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:14:55,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:14:55,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:14:55,629 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:14:55,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:14:55,630 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:14:55,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:14:55,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:14:55,631 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_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6560568361eacef24363f4e5a58f5226b4c8bc2851167e042d4f8ce61eb0aa48 [2022-11-26 00:14:55,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:14:55,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:14:55,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:14:55,990 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:14:55,990 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:14:55,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i [2022-11-26 00:14:59,121 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:14:59,481 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:14:59,481 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i [2022-11-26 00:14:59,502 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/data/38baa345b/cd921aaa79234e7d93f2361268a6cb14/FLAGc0cb22791 [2022-11-26 00:14:59,521 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/data/38baa345b/cd921aaa79234e7d93f2361268a6cb14 [2022-11-26 00:14:59,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:14:59,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:14:59,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:14:59,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:14:59,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:14:59,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:14:59" (1/1) ... [2022-11-26 00:14:59,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f0157c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:59, skipping insertion in model container [2022-11-26 00:14:59,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:14:59" (1/1) ... [2022-11-26 00:14:59,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:14:59,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:15:00,083 WARN L237 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_320942b8-96ef-4b97-bbde-f870b7cec749/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i[33021,33034] [2022-11-26 00:15:00,233 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:15:00,244 WARN L237 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_320942b8-96ef-4b97-bbde-f870b7cec749/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i[44590,44603] [2022-11-26 00:15:00,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:15:00,287 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) [2022-11-26 00:15:00,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f48bff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:00, skipping insertion in model container [2022-11-26 00:15:00,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:15:00,289 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-26 00:15:00,291 INFO L158 Benchmark]: Toolchain (without parser) took 760.45ms. Allocated memory is still 136.3MB. Free memory was 103.2MB in the beginning and 82.7MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-26 00:15:00,291 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:15:00,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 754.78ms. Allocated memory is still 136.3MB. Free memory was 103.0MB in the beginning and 82.7MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-26 00:15:00,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 754.78ms. Allocated memory is still 136.3MB. Free memory was 103.0MB in the beginning and 82.7MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6560568361eacef24363f4e5a58f5226b4c8bc2851167e042d4f8ce61eb0aa48 --- 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-38b53e6 [2022-11-26 00:15:02,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:15:02,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:15:02,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:15:02,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:15:02,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:15:02,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:15:02,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:15:02,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:15:02,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:15:02,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:15:02,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:15:02,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:15:02,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:15:02,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:15:02,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:15:02,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:15:02,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:15:02,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:15:02,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:15:02,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:15:02,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:15:02,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:15:02,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:15:02,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:15:02,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:15:02,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:15:02,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:15:02,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:15:02,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:15:02,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:15:02,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:15:02,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:15:02,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:15:02,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:15:02,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:15:02,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:15:02,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:15:02,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:15:02,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:15:02,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:15:02,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-26 00:15:02,685 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:15:02,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:15:02,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:15:02,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:15:02,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:15:02,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:15:02,687 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:15:02,688 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:15:02,688 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:15:02,688 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:15:02,688 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:15:02,689 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:15:02,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 00:15:02,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 00:15:02,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:15:02,690 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:15:02,690 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:15:02,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:15:02,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:15:02,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:15:02,691 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 00:15:02,692 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 00:15:02,692 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 00:15:02,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:15:02,692 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:15:02,692 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:15:02,693 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:15:02,693 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:15:02,693 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:15:02,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:15:02,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:15:02,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:15:02,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:15:02,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:15:02,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:15:02,695 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:15:02,695 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:15:02,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:15:02,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:15:02,696 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_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6560568361eacef24363f4e5a58f5226b4c8bc2851167e042d4f8ce61eb0aa48 [2022-11-26 00:15:03,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:15:03,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:15:03,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:15:03,087 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:15:03,088 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:15:03,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i [2022-11-26 00:15:06,252 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:15:06,589 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:15:06,590 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i [2022-11-26 00:15:06,607 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/data/07c7cfdca/ba74e859a8084d6abcc2051e8f499eac/FLAGaf3530b96 [2022-11-26 00:15:06,644 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/data/07c7cfdca/ba74e859a8084d6abcc2051e8f499eac [2022-11-26 00:15:06,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:15:06,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:15:06,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:15:06,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:15:06,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:15:06,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:15:06" (1/1) ... [2022-11-26 00:15:06,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eef2e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:06, skipping insertion in model container [2022-11-26 00:15:06,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:15:06" (1/1) ... [2022-11-26 00:15:06,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:15:06,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:15:07,229 WARN L237 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_320942b8-96ef-4b97-bbde-f870b7cec749/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i[33021,33034] [2022-11-26 00:15:07,386 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:15:07,399 WARN L237 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_320942b8-96ef-4b97-bbde-f870b7cec749/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i[44590,44603] [2022-11-26 00:15:07,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:15:07,445 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-26 00:15:07,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:15:07,523 WARN L237 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_320942b8-96ef-4b97-bbde-f870b7cec749/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i[33021,33034] [2022-11-26 00:15:07,602 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:15:07,612 WARN L237 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_320942b8-96ef-4b97-bbde-f870b7cec749/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i[44590,44603] [2022-11-26 00:15:07,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:15:07,654 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:15:07,691 WARN L237 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_320942b8-96ef-4b97-bbde-f870b7cec749/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i[33021,33034] [2022-11-26 00:15:07,731 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:15:07,738 WARN L237 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_320942b8-96ef-4b97-bbde-f870b7cec749/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i[44590,44603] [2022-11-26 00:15:07,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:15:07,790 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:15:07,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:07 WrapperNode [2022-11-26 00:15:07,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:15:07,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:15:07,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:15:07,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:15:07,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:07" (1/1) ... [2022-11-26 00:15:07,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:07" (1/1) ... [2022-11-26 00:15:07,931 INFO L138 Inliner]: procedures = 180, calls = 336, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1201 [2022-11-26 00:15:07,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:15:07,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:15:07,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:15:07,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:15:07,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:07" (1/1) ... [2022-11-26 00:15:07,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:07" (1/1) ... [2022-11-26 00:15:07,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:07" (1/1) ... [2022-11-26 00:15:07,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:07" (1/1) ... [2022-11-26 00:15:08,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:07" (1/1) ... [2022-11-26 00:15:08,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:07" (1/1) ... [2022-11-26 00:15:08,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:07" (1/1) ... [2022-11-26 00:15:08,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:07" (1/1) ... [2022-11-26 00:15:08,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:15:08,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:15:08,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:15:08,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:15:08,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:07" (1/1) ... [2022-11-26 00:15:08,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:15:08,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:15:08,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:15:08,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:15:08,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-26 00:15:08,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-26 00:15:08,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:15:08,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:15:08,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-26 00:15:08,279 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-26 00:15:08,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:15:08,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:15:08,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:15:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:15:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-26 00:15:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:15:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:15:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-26 00:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 00:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:15:08,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:15:08,654 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:15:08,658 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:15:08,663 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-26 00:15:14,299 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:15:14,313 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:15:14,313 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-11-26 00:15:14,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:15:14 BoogieIcfgContainer [2022-11-26 00:15:14,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:15:14,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:15:14,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:15:14,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:15:14,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:15:06" (1/3) ... [2022-11-26 00:15:14,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad6f35e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:15:14, skipping insertion in model container [2022-11-26 00:15:14,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:07" (2/3) ... [2022-11-26 00:15:14,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad6f35e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:15:14, skipping insertion in model container [2022-11-26 00:15:14,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:15:14" (3/3) ... [2022-11-26 00:15:14,325 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test3-2.i [2022-11-26 00:15:14,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:15:14,345 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 639 error locations. [2022-11-26 00:15:14,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:15:14,414 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;@e8e455a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:15:14,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 639 error locations. [2022-11-26 00:15:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 1270 states, 623 states have (on average 2.258426966292135) internal successors, (1407), 1264 states have internal predecessors, (1407), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:14,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 00:15:14,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:14,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 00:15:14,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:14,436 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-11-26 00:15:14,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:14,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006102746] [2022-11-26 00:15:14,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:14,450 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 [2022-11-26 00:15:14,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:14,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:14,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:14,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:15:14,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:14,745 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 [2022-11-26 00:15:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:14,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:14,787 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:14,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006102746] [2022-11-26 00:15:14,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006102746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:14,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:14,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:15:14,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215911281] [2022-11-26 00:15:14,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:14,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:15:14,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:14,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:15:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:15:14,845 INFO L87 Difference]: Start difference. First operand has 1270 states, 623 states have (on average 2.258426966292135) internal successors, (1407), 1264 states have internal predecessors, (1407), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:18,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:18,040 INFO L93 Difference]: Finished difference Result 1442 states and 1526 transitions. [2022-11-26 00:15:18,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:15:18,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-26 00:15:18,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:18,065 INFO L225 Difference]: With dead ends: 1442 [2022-11-26 00:15:18,065 INFO L226 Difference]: Without dead ends: 1440 [2022-11-26 00:15:18,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:15:18,070 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 1179 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:18,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 926 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-26 00:15:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2022-11-26 00:15:18,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1255. [2022-11-26 00:15:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 623 states have (on average 2.110754414125201) internal successors, (1315), 1249 states have internal predecessors, (1315), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:18,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1331 transitions. [2022-11-26 00:15:18,180 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1331 transitions. Word has length 3 [2022-11-26 00:15:18,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:18,180 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 1331 transitions. [2022-11-26 00:15:18,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:18,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1331 transitions. [2022-11-26 00:15:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 00:15:18,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:18,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 00:15:18,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:18,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:18,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:18,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-11-26 00:15:18,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:18,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800364208] [2022-11-26 00:15:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:18,384 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 [2022-11-26 00:15:18,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:18,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:18,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:18,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:15:18,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:18,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:15:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:18,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:18,629 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:18,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800364208] [2022-11-26 00:15:18,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800364208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:18,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:18,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:15:18,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130747910] [2022-11-26 00:15:18,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:18,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:15:18,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:18,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:15:18,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:15:18,633 INFO L87 Difference]: Start difference. First operand 1255 states and 1331 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:23,673 INFO L93 Difference]: Finished difference Result 1864 states and 1991 transitions. [2022-11-26 00:15:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:15:23,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-26 00:15:23,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:23,681 INFO L225 Difference]: With dead ends: 1864 [2022-11-26 00:15:23,681 INFO L226 Difference]: Without dead ends: 1864 [2022-11-26 00:15:23,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:15:23,683 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 650 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:23,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1746 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-26 00:15:23,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-11-26 00:15:23,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1455. [2022-11-26 00:15:23,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 824 states have (on average 2.095873786407767) internal successors, (1727), 1449 states have internal predecessors, (1727), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1743 transitions. [2022-11-26 00:15:23,734 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1743 transitions. Word has length 3 [2022-11-26 00:15:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:23,734 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 1743 transitions. [2022-11-26 00:15:23,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1743 transitions. [2022-11-26 00:15:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:15:23,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:23,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:23,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:23,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:23,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:23,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-11-26 00:15:23,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:23,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322541585] [2022-11-26 00:15:23,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:23,966 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 [2022-11-26 00:15:23,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:23,967 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:23,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:24,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-26 00:15:24,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:24,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:15:24,214 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 [2022-11-26 00:15:24,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:15:24,290 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 [2022-11-26 00:15:24,315 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-26 00:15:24,315 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 [2022-11-26 00:15:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:24,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:24,349 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:24,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322541585] [2022-11-26 00:15:24,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322541585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:24,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:24,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:15:24,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537423383] [2022-11-26 00:15:24,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:24,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:15:24,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:24,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:15:24,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:15:24,352 INFO L87 Difference]: Start difference. First operand 1455 states and 1743 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:28,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:28,940 INFO L93 Difference]: Finished difference Result 1633 states and 1932 transitions. [2022-11-26 00:15:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:15:28,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:15:28,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:28,948 INFO L225 Difference]: With dead ends: 1633 [2022-11-26 00:15:28,948 INFO L226 Difference]: Without dead ends: 1633 [2022-11-26 00:15:28,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:15:28,949 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1470 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:28,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 542 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-26 00:15:28,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2022-11-26 00:15:28,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1244. [2022-11-26 00:15:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 623 states have (on average 2.091492776886035) internal successors, (1303), 1238 states have internal predecessors, (1303), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:28,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1319 transitions. [2022-11-26 00:15:28,982 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1319 transitions. Word has length 7 [2022-11-26 00:15:28,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:28,982 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1319 transitions. [2022-11-26 00:15:28,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:28,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1319 transitions. [2022-11-26 00:15:28,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:15:28,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:28,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:29,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:29,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:29,196 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:29,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-11-26 00:15:29,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:29,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393897708] [2022-11-26 00:15:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:29,199 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 [2022-11-26 00:15:29,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:29,200 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:29,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:29,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:15:29,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:29,381 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 [2022-11-26 00:15:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:29,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:29,398 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:29,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393897708] [2022-11-26 00:15:29,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393897708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:29,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:29,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:15:29,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444164959] [2022-11-26 00:15:29,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:29,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:15:29,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:29,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:15:29,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:15:29,406 INFO L87 Difference]: Start difference. First operand 1244 states and 1319 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:32,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:32,372 INFO L93 Difference]: Finished difference Result 1571 states and 1675 transitions. [2022-11-26 00:15:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:15:32,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 00:15:32,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:32,383 INFO L225 Difference]: With dead ends: 1571 [2022-11-26 00:15:32,383 INFO L226 Difference]: Without dead ends: 1571 [2022-11-26 00:15:32,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:15:32,384 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 988 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:32,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1507 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-26 00:15:32,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2022-11-26 00:15:32,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1195. [2022-11-26 00:15:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 623 states have (on average 2.012841091492777) internal successors, (1254), 1189 states have internal predecessors, (1254), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1270 transitions. [2022-11-26 00:15:32,411 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1270 transitions. Word has length 8 [2022-11-26 00:15:32,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:32,411 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1270 transitions. [2022-11-26 00:15:32,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1270 transitions. [2022-11-26 00:15:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:15:32,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:32,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:32,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:32,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:32,624 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:32,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-11-26 00:15:32,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:32,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346255945] [2022-11-26 00:15:32,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:32,625 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 [2022-11-26 00:15:32,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:32,626 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:32,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:32,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:15:32,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:32,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:15:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:32,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:32,811 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:32,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346255945] [2022-11-26 00:15:32,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346255945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:32,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:32,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:15:32,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646456731] [2022-11-26 00:15:32,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:32,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:15:32,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:32,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:15:32,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:15:32,813 INFO L87 Difference]: Start difference. First operand 1195 states and 1270 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:36,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:36,616 INFO L93 Difference]: Finished difference Result 1649 states and 1756 transitions. [2022-11-26 00:15:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:15:36,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 00:15:36,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:36,622 INFO L225 Difference]: With dead ends: 1649 [2022-11-26 00:15:36,622 INFO L226 Difference]: Without dead ends: 1649 [2022-11-26 00:15:36,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:15:36,623 INFO L413 NwaCegarLoop]: 1370 mSDtfsCounter, 673 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:36,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1910 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-26 00:15:36,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2022-11-26 00:15:36,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1217. [2022-11-26 00:15:36,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 655 states have (on average 2.0) internal successors, (1310), 1211 states have internal predecessors, (1310), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1326 transitions. [2022-11-26 00:15:36,652 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1326 transitions. Word has length 8 [2022-11-26 00:15:36,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:36,652 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1326 transitions. [2022-11-26 00:15:36,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1326 transitions. [2022-11-26 00:15:36,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:15:36,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:36,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:36,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:36,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:36,866 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:36,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:36,867 INFO L85 PathProgramCache]: Analyzing trace with hash 693876885, now seen corresponding path program 1 times [2022-11-26 00:15:36,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:36,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088774739] [2022-11-26 00:15:36,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:36,868 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 [2022-11-26 00:15:36,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:36,870 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:36,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:37,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:15:37,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:37,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:37,150 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:37,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088774739] [2022-11-26 00:15:37,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088774739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:37,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:37,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:15:37,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150678353] [2022-11-26 00:15:37,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:37,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:15:37,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:37,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:15:37,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:15:37,153 INFO L87 Difference]: Start difference. First operand 1217 states and 1326 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:38,302 INFO L93 Difference]: Finished difference Result 1863 states and 2015 transitions. [2022-11-26 00:15:38,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:15:38,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-26 00:15:38,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:38,314 INFO L225 Difference]: With dead ends: 1863 [2022-11-26 00:15:38,315 INFO L226 Difference]: Without dead ends: 1863 [2022-11-26 00:15:38,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:15:38,317 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 754 mSDsluCounter, 2343 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:38,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 3733 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:15:38,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2022-11-26 00:15:38,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1461. [2022-11-26 00:15:38,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 899 states have (on average 1.967741935483871) internal successors, (1769), 1455 states have internal predecessors, (1769), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:38,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1785 transitions. [2022-11-26 00:15:38,358 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1785 transitions. Word has length 11 [2022-11-26 00:15:38,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:38,358 INFO L495 AbstractCegarLoop]: Abstraction has 1461 states and 1785 transitions. [2022-11-26 00:15:38,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:38,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1785 transitions. [2022-11-26 00:15:38,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:15:38,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:38,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:38,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:38,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:38,579 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:38,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:38,580 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-11-26 00:15:38,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:38,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120405649] [2022-11-26 00:15:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:38,580 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 [2022-11-26 00:15:38,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:38,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:38,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:38,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 00:15:38,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:38,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:38,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:38,764 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:38,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120405649] [2022-11-26 00:15:38,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120405649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:38,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:38,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:15:38,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880169939] [2022-11-26 00:15:38,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:38,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:15:38,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:38,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:15:38,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:15:38,766 INFO L87 Difference]: Start difference. First operand 1461 states and 1785 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:38,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:38,809 INFO L93 Difference]: Finished difference Result 1642 states and 1963 transitions. [2022-11-26 00:15:38,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:15:38,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-26 00:15:38,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:38,816 INFO L225 Difference]: With dead ends: 1642 [2022-11-26 00:15:38,816 INFO L226 Difference]: Without dead ends: 1642 [2022-11-26 00:15:38,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:15:38,818 INFO L413 NwaCegarLoop]: 1219 mSDtfsCounter, 602 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:38,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 2068 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:15:38,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2022-11-26 00:15:38,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1401. [2022-11-26 00:15:38,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 863 states have (on average 1.9501738122827346) internal successors, (1683), 1395 states have internal predecessors, (1683), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1699 transitions. [2022-11-26 00:15:38,854 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1699 transitions. Word has length 13 [2022-11-26 00:15:38,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:38,855 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1699 transitions. [2022-11-26 00:15:38,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1699 transitions. [2022-11-26 00:15:38,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 00:15:38,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:38,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:38,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:15:39,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:39,069 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:39,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:39,069 INFO L85 PathProgramCache]: Analyzing trace with hash -100024073, now seen corresponding path program 1 times [2022-11-26 00:15:39,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:39,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226742212] [2022-11-26 00:15:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:39,070 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 [2022-11-26 00:15:39,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:39,071 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:39,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:39,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:15:39,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:39,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:39,265 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:39,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226742212] [2022-11-26 00:15:39,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226742212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:39,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:39,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:15:39,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140834980] [2022-11-26 00:15:39,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:39,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:15:39,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:39,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:15:39,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:15:39,267 INFO L87 Difference]: Start difference. First operand 1401 states and 1699 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:39,355 INFO L93 Difference]: Finished difference Result 1614 states and 1907 transitions. [2022-11-26 00:15:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:15:39,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 [2022-11-26 00:15:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:39,364 INFO L225 Difference]: With dead ends: 1614 [2022-11-26 00:15:39,365 INFO L226 Difference]: Without dead ends: 1614 [2022-11-26 00:15:39,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:15:39,365 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 583 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:39,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 3190 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:15:39,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2022-11-26 00:15:39,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1371. [2022-11-26 00:15:39,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 847 states have (on average 1.9185360094451003) internal successors, (1625), 1365 states have internal predecessors, (1625), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1641 transitions. [2022-11-26 00:15:39,396 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1641 transitions. Word has length 15 [2022-11-26 00:15:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:39,397 INFO L495 AbstractCegarLoop]: Abstraction has 1371 states and 1641 transitions. [2022-11-26 00:15:39,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1641 transitions. [2022-11-26 00:15:39,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:15:39,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:39,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:39,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:39,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:39,610 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr637ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:39,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:39,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1191550546, now seen corresponding path program 1 times [2022-11-26 00:15:39,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:39,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392415117] [2022-11-26 00:15:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:39,611 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 [2022-11-26 00:15:39,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:39,612 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:39,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:39,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-26 00:15:39,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:39,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:15:39,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:15:39,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:15:39,835 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 30 treesize of output 39 [2022-11-26 00:15:39,887 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:15:39,888 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 70 treesize of output 26 [2022-11-26 00:15:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:39,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:39,903 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:39,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392415117] [2022-11-26 00:15:39,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392415117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:39,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:39,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:15:39,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072361039] [2022-11-26 00:15:39,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:39,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:15:39,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:39,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:15:39,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:15:39,923 INFO L87 Difference]: Start difference. First operand 1371 states and 1641 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2022-11-26 00:15:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:41,598 INFO L93 Difference]: Finished difference Result 1825 states and 2165 transitions. [2022-11-26 00:15:41,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:15:41,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-26 00:15:41,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:41,604 INFO L225 Difference]: With dead ends: 1825 [2022-11-26 00:15:41,604 INFO L226 Difference]: Without dead ends: 1825 [2022-11-26 00:15:41,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:15:41,605 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 444 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:41,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 3301 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-26 00:15:41,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2022-11-26 00:15:41,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1370. [2022-11-26 00:15:41,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 846 states have (on average 1.9184397163120568) internal successors, (1623), 1364 states have internal predecessors, (1623), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:41,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1639 transitions. [2022-11-26 00:15:41,637 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1639 transitions. Word has length 16 [2022-11-26 00:15:41,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:41,637 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1639 transitions. [2022-11-26 00:15:41,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2022-11-26 00:15:41,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1639 transitions. [2022-11-26 00:15:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:15:41,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:41,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:41,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:41,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:41,852 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:41,852 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-11-26 00:15:41,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:41,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338572131] [2022-11-26 00:15:41,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:41,853 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 [2022-11-26 00:15:41,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:41,854 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:41,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:42,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 00:15:42,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:42,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:42,099 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:42,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338572131] [2022-11-26 00:15:42,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338572131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:42,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:42,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:15:42,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983170904] [2022-11-26 00:15:42,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:42,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:15:42,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:42,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:15:42,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:15:42,102 INFO L87 Difference]: Start difference. First operand 1370 states and 1639 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:42,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:42,139 INFO L93 Difference]: Finished difference Result 1310 states and 1553 transitions. [2022-11-26 00:15:42,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:15:42,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-26 00:15:42,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:42,144 INFO L225 Difference]: With dead ends: 1310 [2022-11-26 00:15:42,145 INFO L226 Difference]: Without dead ends: 1310 [2022-11-26 00:15:42,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:15:42,146 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 1104 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:42,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1167 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:15:42,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-11-26 00:15:42,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1310. [2022-11-26 00:15:42,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 810 states have (on average 1.8975308641975308) internal successors, (1537), 1304 states have internal predecessors, (1537), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1553 transitions. [2022-11-26 00:15:42,173 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1553 transitions. Word has length 18 [2022-11-26 00:15:42,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:42,174 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 1553 transitions. [2022-11-26 00:15:42,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:42,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1553 transitions. [2022-11-26 00:15:42,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-26 00:15:42,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:42,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:42,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:42,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:42,389 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:42,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:42,390 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-11-26 00:15:42,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:42,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5050527] [2022-11-26 00:15:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:42,390 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 [2022-11-26 00:15:42,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:42,391 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:42,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:42,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:15:42,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:42,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:42,633 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:42,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5050527] [2022-11-26 00:15:42,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5050527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:42,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:42,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:15:42,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949805629] [2022-11-26 00:15:42,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:42,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:15:42,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:42,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:15:42,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:15:42,636 INFO L87 Difference]: Start difference. First operand 1310 states and 1553 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:42,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:42,726 INFO L93 Difference]: Finished difference Result 1282 states and 1497 transitions. [2022-11-26 00:15:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:15:42,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-26 00:15:42,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:42,731 INFO L225 Difference]: With dead ends: 1282 [2022-11-26 00:15:42,731 INFO L226 Difference]: Without dead ends: 1282 [2022-11-26 00:15:42,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:15:42,732 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 1085 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:42,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 2205 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:15:42,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2022-11-26 00:15:42,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1280. [2022-11-26 00:15:42,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 794 states have (on average 1.86272040302267) internal successors, (1479), 1274 states have internal predecessors, (1479), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:42,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1495 transitions. [2022-11-26 00:15:42,756 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1495 transitions. Word has length 20 [2022-11-26 00:15:42,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:42,757 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1495 transitions. [2022-11-26 00:15:42,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:42,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1495 transitions. [2022-11-26 00:15:42,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-26 00:15:42,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:42,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:42,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:42,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:42,972 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:42,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:42,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-11-26 00:15:42,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:42,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664926261] [2022-11-26 00:15:42,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:42,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:42,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:42,974 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:42,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:43,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:15:43,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:43,222 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 [2022-11-26 00:15:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:43,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:43,320 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:43,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664926261] [2022-11-26 00:15:43,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664926261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:43,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:43,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:15:43,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277198575] [2022-11-26 00:15:43,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:43,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:15:43,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:43,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:15:43,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:15:43,322 INFO L87 Difference]: Start difference. First operand 1280 states and 1495 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:46,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:46,943 INFO L93 Difference]: Finished difference Result 1879 states and 2228 transitions. [2022-11-26 00:15:46,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:15:46,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-26 00:15:46,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:46,950 INFO L225 Difference]: With dead ends: 1879 [2022-11-26 00:15:46,951 INFO L226 Difference]: Without dead ends: 1879 [2022-11-26 00:15:46,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:15:46,952 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1764 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:46,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 1269 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-26 00:15:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-11-26 00:15:46,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1276. [2022-11-26 00:15:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 794 states have (on average 1.8526448362720402) internal successors, (1471), 1270 states have internal predecessors, (1471), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:46,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1487 transitions. [2022-11-26 00:15:46,979 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1487 transitions. Word has length 34 [2022-11-26 00:15:46,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:46,980 INFO L495 AbstractCegarLoop]: Abstraction has 1276 states and 1487 transitions. [2022-11-26 00:15:46,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:46,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1487 transitions. [2022-11-26 00:15:46,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-26 00:15:46,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:46,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:46,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:47,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:47,195 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:47,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:47,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-11-26 00:15:47,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:47,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72569945] [2022-11-26 00:15:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:47,196 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 [2022-11-26 00:15:47,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:47,198 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:47,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:47,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-26 00:15:47,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:47,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:15:47,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:47,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:47,689 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:47,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72569945] [2022-11-26 00:15:47,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72569945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:47,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:47,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:15:47,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931816206] [2022-11-26 00:15:47,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:47,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:15:47,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:47,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:15:47,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:15:47,691 INFO L87 Difference]: Start difference. First operand 1276 states and 1487 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:52,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:52,778 INFO L93 Difference]: Finished difference Result 2007 states and 2335 transitions. [2022-11-26 00:15:52,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:15:52,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-26 00:15:52,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:52,785 INFO L225 Difference]: With dead ends: 2007 [2022-11-26 00:15:52,785 INFO L226 Difference]: Without dead ends: 2007 [2022-11-26 00:15:52,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:15:52,786 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 1230 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:52,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 2576 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-26 00:15:52,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2022-11-26 00:15:52,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1272. [2022-11-26 00:15:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 794 states have (on average 1.8425692695214106) internal successors, (1463), 1266 states have internal predecessors, (1463), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1479 transitions. [2022-11-26 00:15:52,814 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1479 transitions. Word has length 34 [2022-11-26 00:15:52,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:52,815 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 1479 transitions. [2022-11-26 00:15:52,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1479 transitions. [2022-11-26 00:15:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-26 00:15:52,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:52,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:52,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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)] Ended with exit code 0 [2022-11-26 00:15:53,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:53,031 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:53,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:53,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-11-26 00:15:53,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:53,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965676888] [2022-11-26 00:15:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:53,032 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 [2022-11-26 00:15:53,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:53,034 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:53,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:53,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:15:53,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:53,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:53,389 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:53,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965676888] [2022-11-26 00:15:53,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965676888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:53,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:53,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:15:53,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803476074] [2022-11-26 00:15:53,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:53,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:15:53,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:53,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:15:53,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:15:53,392 INFO L87 Difference]: Start difference. First operand 1272 states and 1479 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:53,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:53,469 INFO L93 Difference]: Finished difference Result 1260 states and 1459 transitions. [2022-11-26 00:15:53,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:15:53,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-26 00:15:53,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:53,475 INFO L225 Difference]: With dead ends: 1260 [2022-11-26 00:15:53,475 INFO L226 Difference]: Without dead ends: 1260 [2022-11-26 00:15:53,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:15:53,476 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 1054 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:53,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 2183 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:15:53,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-11-26 00:15:53,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2022-11-26 00:15:53,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 782 states have (on average 1.8452685421994885) internal successors, (1443), 1254 states have internal predecessors, (1443), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1459 transitions. [2022-11-26 00:15:53,530 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1459 transitions. Word has length 52 [2022-11-26 00:15:53,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:53,531 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 1459 transitions. [2022-11-26 00:15:53,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1459 transitions. [2022-11-26 00:15:53,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-26 00:15:53,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:53,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:53,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:53,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:53,750 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:53,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:53,751 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-11-26 00:15:53,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:53,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859978608] [2022-11-26 00:15:53,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:53,751 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 [2022-11-26 00:15:53,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:53,753 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:53,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:54,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-26 00:15:54,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:54,184 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 [2022-11-26 00:15:54,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:15:54,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:15:54,811 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 [2022-11-26 00:15:54,832 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-26 00:15:54,833 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 [2022-11-26 00:15:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:54,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:54,851 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:54,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859978608] [2022-11-26 00:15:54,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859978608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:54,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:54,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:15:54,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494558493] [2022-11-26 00:15:54,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:54,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:15:54,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:54,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:15:54,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:15:54,853 INFO L87 Difference]: Start difference. First operand 1260 states and 1459 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:58,723 INFO L93 Difference]: Finished difference Result 1608 states and 1924 transitions. [2022-11-26 00:15:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:15:58,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-26 00:15:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:58,731 INFO L225 Difference]: With dead ends: 1608 [2022-11-26 00:15:58,731 INFO L226 Difference]: Without dead ends: 1608 [2022-11-26 00:15:58,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:15:58,732 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1754 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:58,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1757 Valid, 791 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-26 00:15:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-11-26 00:15:58,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1190. [2022-11-26 00:15:58,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 750 states have (on average 1.7853333333333334) internal successors, (1339), 1184 states have internal predecessors, (1339), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:15:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1355 transitions. [2022-11-26 00:15:58,755 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1355 transitions. Word has length 60 [2022-11-26 00:15:58,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:58,756 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1355 transitions. [2022-11-26 00:15:58,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1355 transitions. [2022-11-26 00:15:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-26 00:15:58,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:58,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:58,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:58,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:58,974 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:15:58,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:58,975 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-11-26 00:15:58,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:58,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262735102] [2022-11-26 00:15:58,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:58,975 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 [2022-11-26 00:15:58,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:58,976 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:15:58,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:15:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:59,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:15:59,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:59,405 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 [2022-11-26 00:15:59,421 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 13 treesize of output 9 [2022-11-26 00:15:59,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-26 00:15:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:59,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:59,471 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:59,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262735102] [2022-11-26 00:15:59,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262735102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:59,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:59,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:15:59,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589681410] [2022-11-26 00:15:59,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:59,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:15:59,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:59,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:15:59,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:15:59,476 INFO L87 Difference]: Start difference. First operand 1190 states and 1355 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:03,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:16:03,227 INFO L93 Difference]: Finished difference Result 1189 states and 1354 transitions. [2022-11-26 00:16:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:16:03,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-26 00:16:03,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:16:03,232 INFO L225 Difference]: With dead ends: 1189 [2022-11-26 00:16:03,232 INFO L226 Difference]: Without dead ends: 1189 [2022-11-26 00:16:03,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:16:03,233 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 4 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:16:03,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2676 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-26 00:16:03,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2022-11-26 00:16:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2022-11-26 00:16:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 750 states have (on average 1.784) internal successors, (1338), 1183 states have internal predecessors, (1338), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:16:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1354 transitions. [2022-11-26 00:16:03,255 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1354 transitions. Word has length 65 [2022-11-26 00:16:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:16:03,256 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1354 transitions. [2022-11-26 00:16:03,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1354 transitions. [2022-11-26 00:16:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-26 00:16:03,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:16:03,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:16:03,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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)] Ended with exit code 0 [2022-11-26 00:16:03,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:16:03,474 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:16:03,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:16:03,475 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-11-26 00:16:03,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:16:03,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457518833] [2022-11-26 00:16:03,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:03,475 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 [2022-11-26 00:16:03,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:16:03,476 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:16:03,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:16:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:16:03,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-26 00:16:03,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:16:03,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:16:03,875 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 13 treesize of output 9 [2022-11-26 00:16:03,885 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 13 treesize of output 9 [2022-11-26 00:16:03,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-26 00:16:03,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-26 00:16:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:03,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:16:03,985 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:16:03,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457518833] [2022-11-26 00:16:03,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457518833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:16:03,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:16:03,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:16:03,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038660495] [2022-11-26 00:16:03,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:16:03,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:16:03,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:16:03,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:16:03,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:16:03,987 INFO L87 Difference]: Start difference. First operand 1189 states and 1354 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:16:08,600 INFO L93 Difference]: Finished difference Result 1188 states and 1353 transitions. [2022-11-26 00:16:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:16:08,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-26 00:16:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:16:08,603 INFO L225 Difference]: With dead ends: 1188 [2022-11-26 00:16:08,604 INFO L226 Difference]: Without dead ends: 1188 [2022-11-26 00:16:08,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:16:08,605 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 2 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:16:08,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2729 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-26 00:16:08,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-11-26 00:16:08,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1188. [2022-11-26 00:16:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 749 states have (on average 1.7850467289719627) internal successors, (1337), 1182 states have internal predecessors, (1337), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:16:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1353 transitions. [2022-11-26 00:16:08,622 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1353 transitions. Word has length 65 [2022-11-26 00:16:08,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:16:08,623 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1353 transitions. [2022-11-26 00:16:08,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:08,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1353 transitions. [2022-11-26 00:16:08,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-26 00:16:08,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:16:08,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:16:08,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:16:08,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:16:08,831 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:16:08,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:16:08,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1808778577, now seen corresponding path program 1 times [2022-11-26 00:16:08,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:16:08,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601887445] [2022-11-26 00:16:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:08,832 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 [2022-11-26 00:16:08,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:16:08,833 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:16:08,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:16:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:16:09,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:16:09,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:16:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:09,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:16:09,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:16:09,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601887445] [2022-11-26 00:16:09,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601887445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:16:09,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:16:09,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:16:09,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489913281] [2022-11-26 00:16:09,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:16:09,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:16:09,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:16:09,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:16:09,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:16:09,240 INFO L87 Difference]: Start difference. First operand 1188 states and 1353 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:16:09,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:16:09,296 INFO L93 Difference]: Finished difference Result 1191 states and 1357 transitions. [2022-11-26 00:16:09,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:16:09,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-11-26 00:16:09,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:16:09,305 INFO L225 Difference]: With dead ends: 1191 [2022-11-26 00:16:09,306 INFO L226 Difference]: Without dead ends: 1191 [2022-11-26 00:16:09,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:16:09,307 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 2 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:16:09,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3127 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:16:09,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-11-26 00:16:09,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1191. [2022-11-26 00:16:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 751 states have (on average 1.7842876165113182) internal successors, (1340), 1185 states have internal predecessors, (1340), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-26 00:16:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1357 transitions. [2022-11-26 00:16:09,336 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1357 transitions. Word has length 73 [2022-11-26 00:16:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:16:09,337 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1357 transitions. [2022-11-26 00:16:09,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:16:09,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1357 transitions. [2022-11-26 00:16:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-26 00:16:09,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:16:09,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:16:09,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:16:09,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:16:09,554 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:16:09,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:16:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash 483111072, now seen corresponding path program 1 times [2022-11-26 00:16:09,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:16:09,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142934133] [2022-11-26 00:16:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:09,555 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 [2022-11-26 00:16:09,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:16:09,556 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:16:09,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:16:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:16:09,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:16:09,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:16:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:09,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:16:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:10,026 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:16:10,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142934133] [2022-11-26 00:16:10,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142934133] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:16:10,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [140932137] [2022-11-26 00:16:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:10,026 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:16:10,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:16:10,037 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:16:10,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-26 00:16:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:16:10,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:16:10,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:16:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:10,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:16:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:10,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [140932137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:16:10,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119194135] [2022-11-26 00:16:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:10,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:16:10,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:16:10,699 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:16:10,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-26 00:16:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:16:11,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:16:11,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:16:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:11,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:16:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:11,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119194135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:16:11,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:16:11,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-26 00:16:11,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692816488] [2022-11-26 00:16:11,141 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:16:11,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:16:11,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:16:11,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:16:11,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:16:11,143 INFO L87 Difference]: Start difference. First operand 1191 states and 1357 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:16:11,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:16:11,406 INFO L93 Difference]: Finished difference Result 1203 states and 1374 transitions. [2022-11-26 00:16:11,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:16:11,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-11-26 00:16:11,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:16:11,411 INFO L225 Difference]: With dead ends: 1203 [2022-11-26 00:16:11,412 INFO L226 Difference]: Without dead ends: 1203 [2022-11-26 00:16:11,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:16:11,413 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 12 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4168 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:16:11,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4168 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:16:11,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-11-26 00:16:11,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2022-11-26 00:16:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 760 states have (on average 1.7828947368421053) internal successors, (1355), 1194 states have internal predecessors, (1355), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-26 00:16:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1372 transitions. [2022-11-26 00:16:11,437 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1372 transitions. Word has length 74 [2022-11-26 00:16:11,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:16:11,437 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1372 transitions. [2022-11-26 00:16:11,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:16:11,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1372 transitions. [2022-11-26 00:16:11,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-26 00:16:11,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:16:11,439 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:16:11,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-26 00:16:11,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-26 00:16:11,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:16:12,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:16:12,046 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:16:12,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:16:12,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1705595153, now seen corresponding path program 2 times [2022-11-26 00:16:12,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:16:12,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398051550] [2022-11-26 00:16:12,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:16:12,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:16:12,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:16:12,048 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:16:12,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:16:12,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:16:12,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:16:12,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:16:12,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:16:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:12,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:16:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:12,932 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:16:12,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398051550] [2022-11-26 00:16:12,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398051550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:16:12,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1958618470] [2022-11-26 00:16:12,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:16:12,933 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:16:12,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:16:12,935 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:16:12,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-26 00:16:14,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:16:14,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:16:14,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:16:14,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:16:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:14,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:16:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:14,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1958618470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:16:14,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658477955] [2022-11-26 00:16:14,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:16:14,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:16:14,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:16:14,959 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:16:14,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-26 00:16:50,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:16:50,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:16:50,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-26 00:16:50,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:16:50,249 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-26 00:16:50,250 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 [2022-11-26 00:16:50,258 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:16:50,321 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 13 treesize of output 9 [2022-11-26 00:16:50,336 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 13 treesize of output 9 [2022-11-26 00:16:50,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-26 00:16:50,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-11-26 00:16:50,695 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1651 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1651) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1650 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1650)))) is different from true [2022-11-26 00:16:50,821 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1654 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1654))) (exists ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1655))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-26 00:16:50,837 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-26 00:16:50,907 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:16:50,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-26 00:16:50,934 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 22 treesize of output 24 [2022-11-26 00:16:51,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-26 00:16:51,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 [2022-11-26 00:16:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-26 00:16:51,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:16:51,587 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_1669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1668 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1668) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-26 00:16:51,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658477955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:16:51,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-26 00:16:51,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-11-26 00:16:51,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813379248] [2022-11-26 00:16:51,595 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-26 00:16:51,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-26 00:16:51,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:16:51,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-26 00:16:51,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=460, Unknown=15, NotChecked=188, Total=756 [2022-11-26 00:16:51,597 INFO L87 Difference]: Start difference. First operand 1201 states and 1372 transitions. Second operand has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-26 00:16:55,118 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_#Ultimate.C_memset_#amount| (_ bv44 32))) (exists ((v_ArrVal_1653 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1653))) (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1652 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1652))) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-26 00:16:59,744 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1654 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1654))) (exists ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1655))) (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-26 00:17:24,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:17:24,530 INFO L93 Difference]: Finished difference Result 2758 states and 3315 transitions. [2022-11-26 00:17:24,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-26 00:17:24,531 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-11-26 00:17:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:17:24,537 INFO L225 Difference]: With dead ends: 2758 [2022-11-26 00:17:24,537 INFO L226 Difference]: Without dead ends: 2746 [2022-11-26 00:17:24,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=459, Invalid=2697, Unknown=60, NotChecked=690, Total=3906 [2022-11-26 00:17:24,540 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 2022 mSDsluCounter, 11831 mSDsCounter, 0 mSdLazyCounter, 11767 mSolverCounterSat, 40 mSolverCounterUnsat, 597 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 12758 SdHoareTripleChecker+Invalid, 19587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11767 IncrementalHoareTripleChecker+Invalid, 597 IncrementalHoareTripleChecker+Unknown, 7183 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:17:24,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2034 Valid, 12758 Invalid, 19587 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 11767 Invalid, 597 Unknown, 7183 Unchecked, 26.2s Time] [2022-11-26 00:17:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-11-26 00:17:24,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1217. [2022-11-26 00:17:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 775 states have (on average 1.7703225806451612) internal successors, (1372), 1209 states have internal predecessors, (1372), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-26 00:17:24,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1390 transitions. [2022-11-26 00:17:24,594 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1390 transitions. Word has length 77 [2022-11-26 00:17:24,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:17:24,594 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1390 transitions. [2022-11-26 00:17:24,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-26 00:17:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1390 transitions. [2022-11-26 00:17:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-26 00:17:24,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:17:24,595 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:17:24,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-26 00:17:24,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-26 00:17:25,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-11-26 00:17:25,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-26 00:17:25,205 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:17:25,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:17:25,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1677221554, now seen corresponding path program 1 times [2022-11-26 00:17:25,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:17:25,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113659138] [2022-11-26 00:17:25,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:17:25,206 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 [2022-11-26 00:17:25,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:17:25,207 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:17:25,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:17:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:17:25,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-26 00:17:25,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:17:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:17:25,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:17:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:17:26,466 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:17:26,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113659138] [2022-11-26 00:17:26,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113659138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:17:26,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [190514780] [2022-11-26 00:17:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:17:26,467 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:17:26,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:17:26,471 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:17:26,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-26 00:17:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:17:27,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-26 00:17:27,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:17:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:17:27,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:17:27,431 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:17:27,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [190514780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:17:27,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924223651] [2022-11-26 00:17:27,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:17:27,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:17:27,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:17:27,435 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:17:27,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-26 00:17:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:17:27,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-26 00:17:27,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:17:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:17:27,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:17:29,074 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:17:29,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924223651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:17:29,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:17:29,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2022-11-26 00:17:29,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050173612] [2022-11-26 00:17:29,075 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:17:29,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-26 00:17:29,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:17:29,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-26 00:17:29,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2022-11-26 00:17:29,077 INFO L87 Difference]: Start difference. First operand 1217 states and 1390 transitions. Second operand has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-26 00:17:32,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:17:32,865 INFO L93 Difference]: Finished difference Result 1254 states and 1438 transitions. [2022-11-26 00:17:32,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-26 00:17:32,866 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2022-11-26 00:17:32,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:17:32,869 INFO L225 Difference]: With dead ends: 1254 [2022-11-26 00:17:32,870 INFO L226 Difference]: Without dead ends: 1246 [2022-11-26 00:17:32,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1628, Invalid=3342, Unknown=0, NotChecked=0, Total=4970 [2022-11-26 00:17:32,872 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 48 mSDsluCounter, 15702 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 16755 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:17:32,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 16755 Invalid, 739 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-26 00:17:32,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-11-26 00:17:32,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1228. [2022-11-26 00:17:32,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 787 states have (on average 1.7611181702668361) internal successors, (1386), 1221 states have internal predecessors, (1386), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-26 00:17:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1403 transitions. [2022-11-26 00:17:32,893 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1403 transitions. Word has length 83 [2022-11-26 00:17:32,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:17:32,894 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 1403 transitions. [2022-11-26 00:17:32,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-26 00:17:32,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1403 transitions. [2022-11-26 00:17:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:17:32,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:17:32,895 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:17:32,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:17:33,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-26 00:17:33,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-26 00:17:33,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:17:33,512 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-11-26 00:17:33,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:17:33,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1527361039, now seen corresponding path program 3 times [2022-11-26 00:17:33,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:17:33,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338615423] [2022-11-26 00:17:33,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:17:33,513 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 [2022-11-26 00:17:33,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:17:33,514 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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) [2022-11-26 00:17:33,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:17:34,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-26 00:17:34,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:17:34,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-26 00:17:34,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:17:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:17:35,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:17:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:17:38,732 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:17:38,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338615423] [2022-11-26 00:17:38,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338615423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:17:38,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [726815239] [2022-11-26 00:17:38,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:17:38,733 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:17:38,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:17:38,735 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:17:38,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-26 00:18:08,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-26 00:18:08,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:18:09,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-26 00:18:09,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:18:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:18:09,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:18:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:18:09,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [726815239] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:18:09,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514029437] [2022-11-26 00:18:09,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:18:09,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:18:09,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:18:09,795 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:18:09,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_320942b8-96ef-4b97-bbde-f870b7cec749/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process