./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_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_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 2f1036b64b29bd922a31935b87e7c90d1acbba8f8044f40e2525bb03d5de1e7f --- 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 [2022-11-25 23:30:20,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:30:20,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:30:20,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:30:20,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:30:20,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:30:20,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:30:20,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:30:20,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:30:20,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:30:20,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:30:20,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:30:20,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:30:20,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:30:20,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:30:20,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:30:20,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:30:20,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:30:20,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:30:20,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:30:20,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:30:20,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:30:20,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:30:20,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:30:20,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:30:20,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:30:20,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:30:20,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:30:20,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:30:20,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:30:20,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:30:20,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:30:20,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:30:20,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:30:20,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:30:20,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:30:20,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:30:20,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:30:20,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:30:20,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:30:20,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:30:20,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-25 23:30:20,394 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:30:20,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:30:20,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:30:20,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:30:20,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:30:20,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:30:20,402 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:30:20,402 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:30:20,403 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:30:20,403 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:30:20,404 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:30:20,405 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:30:20,405 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:30:20,405 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:30:20,405 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:30:20,406 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:30:20,406 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:30:20,406 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:30:20,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 23:30:20,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 23:30:20,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:30:20,409 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:30:20,410 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:30:20,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:30:20,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:30:20,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:30:20,411 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 23:30:20,411 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 23:30:20,411 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 23:30:20,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:30:20,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:30:20,412 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:30:20,413 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:30:20,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:30:20,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:30:20,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:30:20,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:30:20,414 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:30:20,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:30:20,415 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:30:20,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:30:20,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:30:20,415 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_a096d6d5-dd63-400c-b006-d730cb1e16dc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1036b64b29bd922a31935b87e7c90d1acbba8f8044f40e2525bb03d5de1e7f [2022-11-25 23:30:20,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:30:20,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:30:20,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:30:20,829 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:30:20,831 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:30:20,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i [2022-11-25 23:30:24,331 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:30:24,725 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:30:24,726 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i [2022-11-25 23:30:24,751 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/data/fa1dca644/0f1856b53f5e4f1fab5047d8ff31521c/FLAGb6e73216b [2022-11-25 23:30:24,769 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/data/fa1dca644/0f1856b53f5e4f1fab5047d8ff31521c [2022-11-25 23:30:24,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:30:24,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:30:24,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:30:24,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:30:24,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:30:24,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:30:24" (1/1) ... [2022-11-25 23:30:24,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e676c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:24, skipping insertion in model container [2022-11-25 23:30:24,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:30:24" (1/1) ... [2022-11-25 23:30:24,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:30:24,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:30:25,401 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_a096d6d5-dd63-400c-b006-d730cb1e16dc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[33021,33034] [2022-11-25 23:30:25,512 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:30:25,544 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_a096d6d5-dd63-400c-b006-d730cb1e16dc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[44590,44603] [2022-11-25 23:30:25,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:30:25,598 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) [2022-11-25 23:30:25,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3b41e875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:25, skipping insertion in model container [2022-11-25 23:30:25,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:30:25,600 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 23:30:25,602 INFO L158 Benchmark]: Toolchain (without parser) took 824.85ms. Allocated memory is still 174.1MB. Free memory was 139.3MB in the beginning and 131.4MB in the end (delta: 7.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 23:30:25,602 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 99.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:30:25,603 INFO L158 Benchmark]: CACSL2BoogieTranslator took 822.16ms. Allocated memory is still 174.1MB. Free memory was 139.3MB in the beginning and 132.2MB in the end (delta: 7.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 23:30:25,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 99.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 822.16ms. Allocated memory is still 174.1MB. Free memory was 139.3MB in the beginning and 132.2MB in the end (delta: 7.1MB). Peak memory consumption was 10.5MB. 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_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 2f1036b64b29bd922a31935b87e7c90d1acbba8f8044f40e2525bb03d5de1e7f --- 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 [2022-11-25 23:30:27,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:30:27,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:30:28,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:30:28,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:30:28,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:30:28,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:30:28,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:30:28,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:30:28,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:30:28,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:30:28,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:30:28,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:30:28,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:30:28,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:30:28,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:30:28,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:30:28,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:30:28,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:30:28,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:30:28,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:30:28,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:30:28,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:30:28,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:30:28,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:30:28,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:30:28,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:30:28,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:30:28,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:30:28,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:30:28,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:30:28,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:30:28,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:30:28,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:30:28,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:30:28,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:30:28,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:30:28,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:30:28,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:30:28,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:30:28,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:30:28,105 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-25 23:30:28,156 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:30:28,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:30:28,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:30:28,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:30:28,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:30:28,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:30:28,159 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:30:28,159 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:30:28,159 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:30:28,160 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:30:28,161 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:30:28,161 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:30:28,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 23:30:28,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 23:30:28,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:30:28,163 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:30:28,163 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:30:28,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:30:28,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:30:28,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:30:28,166 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 23:30:28,172 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 23:30:28,172 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 23:30:28,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:30:28,173 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:30:28,173 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:30:28,174 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:30:28,176 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:30:28,176 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:30:28,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:30:28,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:30:28,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:30:28,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:30:28,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:30:28,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:30:28,179 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:30:28,179 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:30:28,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:30:28,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:30:28,179 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_a096d6d5-dd63-400c-b006-d730cb1e16dc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1036b64b29bd922a31935b87e7c90d1acbba8f8044f40e2525bb03d5de1e7f [2022-11-25 23:30:28,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:30:28,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:30:28,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:30:28,624 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:30:28,624 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:30:28,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i [2022-11-25 23:30:31,879 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:30:32,229 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:30:32,230 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i [2022-11-25 23:30:32,247 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/data/f874fd22d/72d26174a426495dbc0596300cebf969/FLAG179b6ef10 [2022-11-25 23:30:32,266 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/data/f874fd22d/72d26174a426495dbc0596300cebf969 [2022-11-25 23:30:32,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:30:32,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:30:32,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:30:32,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:30:32,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:30:32,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:30:32" (1/1) ... [2022-11-25 23:30:32,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405f6746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:32, skipping insertion in model container [2022-11-25 23:30:32,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:30:32" (1/1) ... [2022-11-25 23:30:32,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:30:32,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:30:32,946 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_a096d6d5-dd63-400c-b006-d730cb1e16dc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[33021,33034] [2022-11-25 23:30:33,088 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:30:33,099 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_a096d6d5-dd63-400c-b006-d730cb1e16dc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[44590,44603] [2022-11-25 23:30:33,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:30:33,130 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 23:30:33,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:30:33,178 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_a096d6d5-dd63-400c-b006-d730cb1e16dc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[33021,33034] [2022-11-25 23:30:33,233 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:30:33,241 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_a096d6d5-dd63-400c-b006-d730cb1e16dc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[44590,44603] [2022-11-25 23:30:33,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:30:33,258 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:30:33,284 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_a096d6d5-dd63-400c-b006-d730cb1e16dc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[33021,33034] [2022-11-25 23:30:33,355 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:30:33,361 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_a096d6d5-dd63-400c-b006-d730cb1e16dc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[44590,44603] [2022-11-25 23:30:33,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:30:33,444 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:30:33,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:33 WrapperNode [2022-11-25 23:30:33,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:30:33,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:30:33,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:30:33,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:30:33,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:33" (1/1) ... [2022-11-25 23:30:33,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:33" (1/1) ... [2022-11-25 23:30:33,611 INFO L138 Inliner]: procedures = 180, calls = 336, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1201 [2022-11-25 23:30:33,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:30:33,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:30:33,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:30:33,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:30:33,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:33" (1/1) ... [2022-11-25 23:30:33,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:33" (1/1) ... [2022-11-25 23:30:33,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:33" (1/1) ... [2022-11-25 23:30:33,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:33" (1/1) ... [2022-11-25 23:30:33,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:33" (1/1) ... [2022-11-25 23:30:33,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:33" (1/1) ... [2022-11-25 23:30:33,743 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:33" (1/1) ... [2022-11-25 23:30:33,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:33" (1/1) ... [2022-11-25 23:30:33,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:30:33,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:30:33,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:30:33,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:30:33,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:33" (1/1) ... [2022-11-25 23:30:33,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:30:33,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:30:33,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:30:33,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:30:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-25 23:30:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 23:30:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 23:30:33,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 23:30:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-25 23:30:33,853 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-25 23:30:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:30:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:30:33,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:30:33,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:30:33,855 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-25 23:30:33,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:30:33,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:30:33,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 23:30:33,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 23:30:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:30:33,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:30:34,162 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:30:34,164 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:30:34,168 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 23:30:39,783 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:30:39,796 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:30:39,796 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-11-25 23:30:39,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:30:39 BoogieIcfgContainer [2022-11-25 23:30:39,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:30:39,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:30:39,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:30:39,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:30:39,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:30:32" (1/3) ... [2022-11-25 23:30:39,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5628d833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:30:39, skipping insertion in model container [2022-11-25 23:30:39,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:33" (2/3) ... [2022-11-25 23:30:39,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5628d833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:30:39, skipping insertion in model container [2022-11-25 23:30:39,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:30:39" (3/3) ... [2022-11-25 23:30:39,808 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test3-2.i [2022-11-25 23:30:39,825 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:30:39,825 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 639 error locations. [2022-11-25 23:30:39,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:30:39,911 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;@3fdda060, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:30:39,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 639 error locations. [2022-11-25 23:30:39,923 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) [2022-11-25 23:30:39,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 23:30:39,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:39,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 23:30:39,931 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)] === [2022-11-25 23:30:39,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-11-25 23:30:39,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:30:39,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466988671] [2022-11-25 23:30:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:39,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:30:39,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:30:39,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:30:39,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:30:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:40,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:30:40,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:30:40,216 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 [2022-11-25 23:30:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:30:40,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:30:40,248 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:30:40,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466988671] [2022-11-25 23:30:40,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466988671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:40,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:40,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:30:40,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391035898] [2022-11-25 23:30:40,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:40,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:30:40,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:30:40,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:30:40,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:30:40,304 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) [2022-11-25 23:30:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:43,184 INFO L93 Difference]: Finished difference Result 1442 states and 1526 transitions. [2022-11-25 23:30:43,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:30:43,187 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 [2022-11-25 23:30:43,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:43,211 INFO L225 Difference]: With dead ends: 1442 [2022-11-25 23:30:43,211 INFO L226 Difference]: Without dead ends: 1440 [2022-11-25 23:30:43,213 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 [2022-11-25 23:30:43,225 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 1179 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:43,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 926 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 23:30:43,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2022-11-25 23:30:43,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1255. [2022-11-25 23:30:43,368 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) [2022-11-25 23:30:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1331 transitions. [2022-11-25 23:30:43,375 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1331 transitions. Word has length 3 [2022-11-25 23:30:43,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:43,375 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 1331 transitions. [2022-11-25 23:30:43,376 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) [2022-11-25 23:30:43,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1331 transitions. [2022-11-25 23:30:43,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 23:30:43,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:43,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 23:30:43,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:30:43,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:30:43,589 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)] === [2022-11-25 23:30:43,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:43,589 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-11-25 23:30:43,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:30:43,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197372283] [2022-11-25 23:30:43,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:43,590 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 [2022-11-25 23:30:43,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:30:43,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:30:43,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:30:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:43,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:30:43,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:30:43,821 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 [2022-11-25 23:30:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:30:43,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:30:43,837 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:30:43,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197372283] [2022-11-25 23:30:43,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197372283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:43,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:43,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:30:43,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498933799] [2022-11-25 23:30:43,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:43,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:30:43,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:30:43,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:30:43,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:30:43,841 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) [2022-11-25 23:30:48,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:48,421 INFO L93 Difference]: Finished difference Result 1864 states and 1991 transitions. [2022-11-25 23:30:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:30:48,422 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 [2022-11-25 23:30:48,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:48,429 INFO L225 Difference]: With dead ends: 1864 [2022-11-25 23:30:48,430 INFO L226 Difference]: Without dead ends: 1864 [2022-11-25 23:30:48,430 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 [2022-11-25 23:30:48,431 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 650 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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, 4.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:48,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1746 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-25 23:30:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-11-25 23:30:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1455. [2022-11-25 23:30:48,466 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) [2022-11-25 23:30:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1743 transitions. [2022-11-25 23:30:48,473 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1743 transitions. Word has length 3 [2022-11-25 23:30:48,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:48,473 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 1743 transitions. [2022-11-25 23:30:48,474 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) [2022-11-25 23:30:48,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1743 transitions. [2022-11-25 23:30:48,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 23:30:48,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:48,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:48,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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)] Ended with exit code 0 [2022-11-25 23:30:48,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:30:48,686 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)] === [2022-11-25 23:30:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:48,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-11-25 23:30:48,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:30:48,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354607754] [2022-11-25 23:30:48,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:48,688 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 [2022-11-25 23:30:48,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:30:48,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:30:48,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:30:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:48,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 23:30:48,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:30:48,901 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 [2022-11-25 23:30:48,909 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 [2022-11-25 23:30:49,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:30:49,020 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 [2022-11-25 23:30:49,043 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 23:30:49,044 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 [2022-11-25 23:30:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:30:49,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:30:49,069 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:30:49,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354607754] [2022-11-25 23:30:49,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354607754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:49,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:49,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:30:49,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448316175] [2022-11-25 23:30:49,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:49,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:30:49,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:30:49,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:30:49,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:30:49,073 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) [2022-11-25 23:30:53,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:53,452 INFO L93 Difference]: Finished difference Result 1633 states and 1932 transitions. [2022-11-25 23:30:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:30:53,453 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 [2022-11-25 23:30:53,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:53,458 INFO L225 Difference]: With dead ends: 1633 [2022-11-25 23:30:53,458 INFO L226 Difference]: Without dead ends: 1633 [2022-11-25 23:30:53,458 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 [2022-11-25 23:30:53,459 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1470 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s 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, 4.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:53,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 542 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-25 23:30:53,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2022-11-25 23:30:53,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1244. [2022-11-25 23:30:53,483 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) [2022-11-25 23:30:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1319 transitions. [2022-11-25 23:30:53,488 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1319 transitions. Word has length 7 [2022-11-25 23:30:53,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:53,488 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1319 transitions. [2022-11-25 23:30:53,488 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) [2022-11-25 23:30:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1319 transitions. [2022-11-25 23:30:53,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:30:53,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:53,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:53,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:30:53,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:30:53,701 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)] === [2022-11-25 23:30:53,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:53,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-11-25 23:30:53,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:30:53,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342653601] [2022-11-25 23:30:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:53,702 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 [2022-11-25 23:30:53,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:30:53,704 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:30:53,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:30:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:53,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:30:53,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:30:53,849 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 [2022-11-25 23:30:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:30:53,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:30:53,872 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:30:53,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342653601] [2022-11-25 23:30:53,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342653601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:53,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:53,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:30:53,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360122019] [2022-11-25 23:30:53,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:53,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:30:53,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:30:53,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:30:53,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:30:53,880 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) [2022-11-25 23:30:56,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:56,729 INFO L93 Difference]: Finished difference Result 1571 states and 1675 transitions. [2022-11-25 23:30:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:30:56,732 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 [2022-11-25 23:30:56,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:56,737 INFO L225 Difference]: With dead ends: 1571 [2022-11-25 23:30:56,737 INFO L226 Difference]: Without dead ends: 1571 [2022-11-25 23:30:56,738 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 [2022-11-25 23:30:56,739 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 988 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:56,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1507 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 23:30:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2022-11-25 23:30:56,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1195. [2022-11-25 23:30:56,763 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) [2022-11-25 23:30:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1270 transitions. [2022-11-25 23:30:56,767 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1270 transitions. Word has length 8 [2022-11-25 23:30:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:56,767 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1270 transitions. [2022-11-25 23:30:56,768 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) [2022-11-25 23:30:56,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1270 transitions. [2022-11-25 23:30:56,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:30:56,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:56,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:56,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:30:56,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:30:56,980 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)] === [2022-11-25 23:30:56,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:56,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-11-25 23:30:56,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:30:56,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480831778] [2022-11-25 23:30:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:56,981 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 [2022-11-25 23:30:56,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:30:56,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:30:57,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:30:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:57,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:30:57,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:30:57,160 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 [2022-11-25 23:30:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:30:57,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:30:57,188 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:30:57,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480831778] [2022-11-25 23:30:57,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480831778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:57,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:57,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:30:57,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566408867] [2022-11-25 23:30:57,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:57,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:30:57,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:30:57,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:30:57,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:30:57,191 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) [2022-11-25 23:31:01,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:01,212 INFO L93 Difference]: Finished difference Result 1649 states and 1756 transitions. [2022-11-25 23:31:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:31:01,213 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 [2022-11-25 23:31:01,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:01,217 INFO L225 Difference]: With dead ends: 1649 [2022-11-25 23:31:01,217 INFO L226 Difference]: Without dead ends: 1649 [2022-11-25 23:31:01,218 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 [2022-11-25 23:31:01,219 INFO L413 NwaCegarLoop]: 1370 mSDtfsCounter, 673 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s 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, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:31:01,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1910 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 23:31:01,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2022-11-25 23:31:01,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1217. [2022-11-25 23:31:01,243 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) [2022-11-25 23:31:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1326 transitions. [2022-11-25 23:31:01,247 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1326 transitions. Word has length 8 [2022-11-25 23:31:01,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:01,248 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1326 transitions. [2022-11-25 23:31:01,248 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) [2022-11-25 23:31:01,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1326 transitions. [2022-11-25 23:31:01,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:31:01,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:01,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:31:01,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:01,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:01,461 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)] === [2022-11-25 23:31:01,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:01,462 INFO L85 PathProgramCache]: Analyzing trace with hash 693876885, now seen corresponding path program 1 times [2022-11-25 23:31:01,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:01,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683851619] [2022-11-25 23:31:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:01,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:31:01,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:01,464 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:01,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:01,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:31:01,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:01,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:01,735 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:01,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683851619] [2022-11-25 23:31:01,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683851619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:01,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:01,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:31:01,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013036224] [2022-11-25 23:31:01,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:01,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:31:01,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:01,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:31:01,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:31:01,741 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) [2022-11-25 23:31:02,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:02,869 INFO L93 Difference]: Finished difference Result 1863 states and 2015 transitions. [2022-11-25 23:31:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:31:02,870 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 [2022-11-25 23:31:02,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:02,877 INFO L225 Difference]: With dead ends: 1863 [2022-11-25 23:31:02,878 INFO L226 Difference]: Without dead ends: 1863 [2022-11-25 23:31:02,878 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 [2022-11-25 23:31:02,879 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 [2022-11-25 23:31:02,879 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] [2022-11-25 23:31:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2022-11-25 23:31:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1461. [2022-11-25 23:31:02,905 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) [2022-11-25 23:31:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1785 transitions. [2022-11-25 23:31:02,910 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1785 transitions. Word has length 11 [2022-11-25 23:31:02,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:02,910 INFO L495 AbstractCegarLoop]: Abstraction has 1461 states and 1785 transitions. [2022-11-25 23:31:02,910 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) [2022-11-25 23:31:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1785 transitions. [2022-11-25 23:31:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 23:31:02,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:02,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:31:02,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:03,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:03,123 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)] === [2022-11-25 23:31:03,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:03,123 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-11-25 23:31:03,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:03,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566526608] [2022-11-25 23:31:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:03,124 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 [2022-11-25 23:31:03,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:03,128 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:03,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:03,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:31:03,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:03,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:03,319 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:03,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566526608] [2022-11-25 23:31:03,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566526608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:03,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:03,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:31:03,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905684204] [2022-11-25 23:31:03,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:03,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:31:03,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:03,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:31:03,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:31:03,322 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) [2022-11-25 23:31:03,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:03,361 INFO L93 Difference]: Finished difference Result 1642 states and 1963 transitions. [2022-11-25 23:31:03,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:31:03,362 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 [2022-11-25 23:31:03,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:03,366 INFO L225 Difference]: With dead ends: 1642 [2022-11-25 23:31:03,367 INFO L226 Difference]: Without dead ends: 1642 [2022-11-25 23:31:03,367 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 [2022-11-25 23:31:03,368 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 [2022-11-25 23:31:03,368 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] [2022-11-25 23:31:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2022-11-25 23:31:03,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1401. [2022-11-25 23:31:03,394 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) [2022-11-25 23:31:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1699 transitions. [2022-11-25 23:31:03,398 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1699 transitions. Word has length 13 [2022-11-25 23:31:03,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:03,399 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1699 transitions. [2022-11-25 23:31:03,399 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) [2022-11-25 23:31:03,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1699 transitions. [2022-11-25 23:31:03,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 23:31:03,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:03,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:31:03,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:03,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:03,613 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)] === [2022-11-25 23:31:03,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:03,613 INFO L85 PathProgramCache]: Analyzing trace with hash -100024073, now seen corresponding path program 1 times [2022-11-25 23:31:03,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:03,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848529835] [2022-11-25 23:31:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:03,614 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 [2022-11-25 23:31:03,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:03,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:03,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:03,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:31:03,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:03,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:03,813 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:03,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848529835] [2022-11-25 23:31:03,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848529835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:03,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:03,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:31:03,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916462101] [2022-11-25 23:31:03,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:03,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:31:03,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:03,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:31:03,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:31:03,816 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) [2022-11-25 23:31:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:03,920 INFO L93 Difference]: Finished difference Result 1614 states and 1907 transitions. [2022-11-25 23:31:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:31:03,920 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 [2022-11-25 23:31:03,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:03,925 INFO L225 Difference]: With dead ends: 1614 [2022-11-25 23:31:03,925 INFO L226 Difference]: Without dead ends: 1614 [2022-11-25 23:31:03,925 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 [2022-11-25 23:31:03,926 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 583 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-25 23:31:03,926 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] [2022-11-25 23:31:03,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2022-11-25 23:31:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1371. [2022-11-25 23:31:03,953 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) [2022-11-25 23:31:03,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1641 transitions. [2022-11-25 23:31:03,957 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1641 transitions. Word has length 15 [2022-11-25 23:31:03,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:03,958 INFO L495 AbstractCegarLoop]: Abstraction has 1371 states and 1641 transitions. [2022-11-25 23:31:03,958 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) [2022-11-25 23:31:03,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1641 transitions. [2022-11-25 23:31:03,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-25 23:31:03,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:03,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:31:03,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:04,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:04,171 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)] === [2022-11-25 23:31:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:04,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1191550546, now seen corresponding path program 1 times [2022-11-25 23:31:04,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:04,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394644481] [2022-11-25 23:31:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:04,172 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 [2022-11-25 23:31:04,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:04,174 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:04,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:04,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 23:31:04,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:04,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:31:04,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:31:04,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:31:04,449 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 [2022-11-25 23:31:04,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 23:31:04,506 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 [2022-11-25 23:31:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:04,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:04,522 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:04,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394644481] [2022-11-25 23:31:04,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394644481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:04,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:04,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:31:04,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672600990] [2022-11-25 23:31:04,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:04,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:31:04,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:04,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:31:04,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:31:04,526 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) [2022-11-25 23:31:06,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:06,289 INFO L93 Difference]: Finished difference Result 1825 states and 2165 transitions. [2022-11-25 23:31:06,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:31:06,289 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 [2022-11-25 23:31:06,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:06,293 INFO L225 Difference]: With dead ends: 1825 [2022-11-25 23:31:06,293 INFO L226 Difference]: Without dead ends: 1825 [2022-11-25 23:31:06,294 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 [2022-11-25 23:31:06,294 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 444 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:31:06,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 3301 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 23:31:06,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2022-11-25 23:31:06,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1370. [2022-11-25 23:31:06,320 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) [2022-11-25 23:31:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1639 transitions. [2022-11-25 23:31:06,324 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1639 transitions. Word has length 16 [2022-11-25 23:31:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:06,325 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1639 transitions. [2022-11-25 23:31:06,325 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) [2022-11-25 23:31:06,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1639 transitions. [2022-11-25 23:31:06,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 23:31:06,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:06,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:31:06,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:06,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:06,539 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)] === [2022-11-25 23:31:06,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:06,539 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-11-25 23:31:06,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:06,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073417057] [2022-11-25 23:31:06,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:06,540 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 [2022-11-25 23:31:06,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:06,542 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:06,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:06,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:31:06,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:06,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:06,766 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:06,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073417057] [2022-11-25 23:31:06,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073417057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:06,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:06,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:31:06,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075663489] [2022-11-25 23:31:06,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:06,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:31:06,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:06,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:31:06,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:31:06,769 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) [2022-11-25 23:31:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:06,805 INFO L93 Difference]: Finished difference Result 1310 states and 1553 transitions. [2022-11-25 23:31:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:31:06,806 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 [2022-11-25 23:31:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:06,811 INFO L225 Difference]: With dead ends: 1310 [2022-11-25 23:31:06,811 INFO L226 Difference]: Without dead ends: 1310 [2022-11-25 23:31:06,811 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 [2022-11-25 23:31:06,812 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 [2022-11-25 23:31:06,813 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] [2022-11-25 23:31:06,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-11-25 23:31:06,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1310. [2022-11-25 23:31:06,834 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) [2022-11-25 23:31:06,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1553 transitions. [2022-11-25 23:31:06,838 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1553 transitions. Word has length 18 [2022-11-25 23:31:06,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:06,838 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 1553 transitions. [2022-11-25 23:31:06,838 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) [2022-11-25 23:31:06,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1553 transitions. [2022-11-25 23:31:06,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 23:31:06,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:06,840 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] [2022-11-25 23:31:06,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:07,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:07,054 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)] === [2022-11-25 23:31:07,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:07,054 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-11-25 23:31:07,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:07,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691774466] [2022-11-25 23:31:07,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:07,055 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 [2022-11-25 23:31:07,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:07,056 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:07,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:07,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:31:07,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:07,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:07,297 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:07,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691774466] [2022-11-25 23:31:07,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691774466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:07,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:07,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:31:07,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440826370] [2022-11-25 23:31:07,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:07,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:31:07,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:07,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:31:07,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:31:07,300 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) [2022-11-25 23:31:07,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:07,398 INFO L93 Difference]: Finished difference Result 1282 states and 1497 transitions. [2022-11-25 23:31:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:31:07,399 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 [2022-11-25 23:31:07,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:07,402 INFO L225 Difference]: With dead ends: 1282 [2022-11-25 23:31:07,402 INFO L226 Difference]: Without dead ends: 1282 [2022-11-25 23:31:07,403 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 [2022-11-25 23:31:07,403 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 1085 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-25 23:31:07,404 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] [2022-11-25 23:31:07,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2022-11-25 23:31:07,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1280. [2022-11-25 23:31:07,427 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) [2022-11-25 23:31:07,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1495 transitions. [2022-11-25 23:31:07,431 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1495 transitions. Word has length 20 [2022-11-25 23:31:07,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:07,432 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1495 transitions. [2022-11-25 23:31:07,432 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) [2022-11-25 23:31:07,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1495 transitions. [2022-11-25 23:31:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-25 23:31:07,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:07,434 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] [2022-11-25 23:31:07,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:07,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:07,648 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)] === [2022-11-25 23:31:07,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:07,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-11-25 23:31:07,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:07,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693115314] [2022-11-25 23:31:07,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:07,649 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 [2022-11-25 23:31:07,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:07,650 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:07,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:07,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:31:07,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:07,882 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 [2022-11-25 23:31:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:07,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:07,982 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:07,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693115314] [2022-11-25 23:31:07,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693115314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:07,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:07,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:31:07,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037367308] [2022-11-25 23:31:07,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:07,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:31:07,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:07,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:31:07,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:31:07,984 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) [2022-11-25 23:31:11,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:11,258 INFO L93 Difference]: Finished difference Result 1879 states and 2228 transitions. [2022-11-25 23:31:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:31:11,261 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 [2022-11-25 23:31:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:11,267 INFO L225 Difference]: With dead ends: 1879 [2022-11-25 23:31:11,267 INFO L226 Difference]: Without dead ends: 1879 [2022-11-25 23:31:11,268 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 [2022-11-25 23:31:11,268 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1764 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 3.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:31:11,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 1269 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-25 23:31:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-11-25 23:31:11,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1276. [2022-11-25 23:31:11,304 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) [2022-11-25 23:31:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1487 transitions. [2022-11-25 23:31:11,307 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1487 transitions. Word has length 34 [2022-11-25 23:31:11,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:11,308 INFO L495 AbstractCegarLoop]: Abstraction has 1276 states and 1487 transitions. [2022-11-25 23:31:11,309 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) [2022-11-25 23:31:11,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1487 transitions. [2022-11-25 23:31:11,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-25 23:31:11,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:11,314 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] [2022-11-25 23:31:11,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:11,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:11,527 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)] === [2022-11-25 23:31:11,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:11,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-11-25 23:31:11,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:11,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838081472] [2022-11-25 23:31:11,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:11,529 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 [2022-11-25 23:31:11,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:11,530 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:11,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:11,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 23:31:11,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:11,787 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 [2022-11-25 23:31:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:12,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:12,006 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:12,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838081472] [2022-11-25 23:31:12,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838081472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:12,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:12,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:31:12,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526618808] [2022-11-25 23:31:12,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:12,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:31:12,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:12,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:31:12,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:31:12,008 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) [2022-11-25 23:31:17,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:17,098 INFO L93 Difference]: Finished difference Result 2007 states and 2335 transitions. [2022-11-25 23:31:17,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:31:17,099 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 [2022-11-25 23:31:17,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:17,107 INFO L225 Difference]: With dead ends: 2007 [2022-11-25 23:31:17,107 INFO L226 Difference]: Without dead ends: 2007 [2022-11-25 23:31:17,107 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 [2022-11-25 23:31:17,107 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 [2022-11-25 23:31:17,108 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] [2022-11-25 23:31:17,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2022-11-25 23:31:17,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1272. [2022-11-25 23:31:17,128 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) [2022-11-25 23:31:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1479 transitions. [2022-11-25 23:31:17,131 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1479 transitions. Word has length 34 [2022-11-25 23:31:17,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:17,132 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 1479 transitions. [2022-11-25 23:31:17,132 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) [2022-11-25 23:31:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1479 transitions. [2022-11-25 23:31:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 23:31:17,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:17,133 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] [2022-11-25 23:31:17,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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)] Forceful destruction successful, exit code 0 [2022-11-25 23:31:17,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:17,346 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)] === [2022-11-25 23:31:17,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:17,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-11-25 23:31:17,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:17,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163269216] [2022-11-25 23:31:17,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:17,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:31:17,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:17,352 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:17,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:17,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:31:17,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:17,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:17,733 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:17,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163269216] [2022-11-25 23:31:17,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163269216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:17,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:17,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:31:17,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113432050] [2022-11-25 23:31:17,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:17,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:31:17,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:17,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:31:17,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:31:17,736 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) [2022-11-25 23:31:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:17,803 INFO L93 Difference]: Finished difference Result 1260 states and 1459 transitions. [2022-11-25 23:31:17,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:31:17,804 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 [2022-11-25 23:31:17,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:17,808 INFO L225 Difference]: With dead ends: 1260 [2022-11-25 23:31:17,808 INFO L226 Difference]: Without dead ends: 1260 [2022-11-25 23:31:17,809 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 [2022-11-25 23:31:17,809 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:31:17,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 2183 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:31:17,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-11-25 23:31:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2022-11-25 23:31:17,827 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) [2022-11-25 23:31:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1459 transitions. [2022-11-25 23:31:17,830 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1459 transitions. Word has length 52 [2022-11-25 23:31:17,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:17,830 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 1459 transitions. [2022-11-25 23:31:17,831 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) [2022-11-25 23:31:17,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1459 transitions. [2022-11-25 23:31:17,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-25 23:31:17,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:17,832 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] [2022-11-25 23:31:17,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:18,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:18,046 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)] === [2022-11-25 23:31:18,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:18,047 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-11-25 23:31:18,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:18,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480796815] [2022-11-25 23:31:18,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:18,048 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 [2022-11-25 23:31:18,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:18,049 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:18,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:18,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 23:31:18,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:18,469 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 [2022-11-25 23:31:18,478 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 [2022-11-25 23:31:19,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:31:19,069 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 [2022-11-25 23:31:19,085 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 23:31:19,085 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 [2022-11-25 23:31:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:19,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:19,101 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:19,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480796815] [2022-11-25 23:31:19,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480796815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:19,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:19,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:31:19,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527222921] [2022-11-25 23:31:19,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:19,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:31:19,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:19,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:31:19,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:31:19,104 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) [2022-11-25 23:31:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:22,823 INFO L93 Difference]: Finished difference Result 1608 states and 1924 transitions. [2022-11-25 23:31:22,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:31:22,824 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 [2022-11-25 23:31:22,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:22,830 INFO L225 Difference]: With dead ends: 1608 [2022-11-25 23:31:22,830 INFO L226 Difference]: Without dead ends: 1608 [2022-11-25 23:31:22,830 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 [2022-11-25 23:31:22,831 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1754 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:31:22,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1757 Valid, 791 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 23:31:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-11-25 23:31:22,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1190. [2022-11-25 23:31:22,848 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) [2022-11-25 23:31:22,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1355 transitions. [2022-11-25 23:31:22,850 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1355 transitions. Word has length 60 [2022-11-25 23:31:22,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:22,851 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1355 transitions. [2022-11-25 23:31:22,851 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) [2022-11-25 23:31:22,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1355 transitions. [2022-11-25 23:31:22,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 23:31:22,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:22,852 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] [2022-11-25 23:31:22,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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)] Ended with exit code 0 [2022-11-25 23:31:23,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:23,067 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)] === [2022-11-25 23:31:23,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:23,068 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-11-25 23:31:23,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:23,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224413085] [2022-11-25 23:31:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:23,069 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 [2022-11-25 23:31:23,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:23,070 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:23,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:23,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 23:31:23,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:23,434 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 [2022-11-25 23:31:23,450 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 [2022-11-25 23:31:23,484 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 [2022-11-25 23:31:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:23,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:23,496 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:23,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224413085] [2022-11-25 23:31:23,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224413085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:23,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:23,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:31:23,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100014386] [2022-11-25 23:31:23,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:23,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:31:23,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:31:23,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:31:23,498 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) [2022-11-25 23:31:27,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:27,002 INFO L93 Difference]: Finished difference Result 1189 states and 1354 transitions. [2022-11-25 23:31:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:31:27,003 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 [2022-11-25 23:31:27,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:27,007 INFO L225 Difference]: With dead ends: 1189 [2022-11-25 23:31:27,007 INFO L226 Difference]: Without dead ends: 1189 [2022-11-25 23:31:27,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:31:27,008 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 4 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:31:27,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2676 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 23:31:27,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2022-11-25 23:31:27,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2022-11-25 23:31:27,025 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) [2022-11-25 23:31:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1354 transitions. [2022-11-25 23:31:27,028 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1354 transitions. Word has length 65 [2022-11-25 23:31:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:27,028 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1354 transitions. [2022-11-25 23:31:27,028 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) [2022-11-25 23:31:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1354 transitions. [2022-11-25 23:31:27,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 23:31:27,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:27,030 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] [2022-11-25 23:31:27,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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)] Forceful destruction successful, exit code 0 [2022-11-25 23:31:27,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:27,246 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)] === [2022-11-25 23:31:27,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:27,246 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-11-25 23:31:27,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:27,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343011064] [2022-11-25 23:31:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:27,247 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 [2022-11-25 23:31:27,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:27,249 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:27,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:27,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 23:31:27,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:27,660 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 [2022-11-25 23:31:27,699 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 [2022-11-25 23:31:27,710 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 [2022-11-25 23:31:27,772 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 [2022-11-25 23:31:27,781 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 [2022-11-25 23:31:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:27,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:27,802 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:27,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343011064] [2022-11-25 23:31:27,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343011064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:27,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:27,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:31:27,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846664200] [2022-11-25 23:31:27,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:27,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:31:27,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:27,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:31:27,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:31:27,804 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) [2022-11-25 23:31:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:32,395 INFO L93 Difference]: Finished difference Result 1188 states and 1353 transitions. [2022-11-25 23:31:32,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:31:32,399 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 [2022-11-25 23:31:32,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:32,403 INFO L225 Difference]: With dead ends: 1188 [2022-11-25 23:31:32,403 INFO L226 Difference]: Without dead ends: 1188 [2022-11-25 23:31:32,403 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 [2022-11-25 23:31:32,404 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 2 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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 [2022-11-25 23:31:32,404 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] [2022-11-25 23:31:32,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-11-25 23:31:32,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1188. [2022-11-25 23:31:32,419 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) [2022-11-25 23:31:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1353 transitions. [2022-11-25 23:31:32,422 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1353 transitions. Word has length 65 [2022-11-25 23:31:32,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:32,422 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1353 transitions. [2022-11-25 23:31:32,423 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) [2022-11-25 23:31:32,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1353 transitions. [2022-11-25 23:31:32,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 23:31:32,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:32,424 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] [2022-11-25 23:31:32,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:32,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:32,638 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)] === [2022-11-25 23:31:32,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:32,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1808778577, now seen corresponding path program 1 times [2022-11-25 23:31:32,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:32,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081224897] [2022-11-25 23:31:32,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:32,640 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 [2022-11-25 23:31:32,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:32,641 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:32,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:33,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:31:33,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:33,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:33,059 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:33,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081224897] [2022-11-25 23:31:33,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081224897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:33,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:33,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:31:33,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564107986] [2022-11-25 23:31:33,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:33,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:31:33,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:33,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:31:33,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:31:33,066 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) [2022-11-25 23:31:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:33,124 INFO L93 Difference]: Finished difference Result 1191 states and 1357 transitions. [2022-11-25 23:31:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:31:33,126 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 [2022-11-25 23:31:33,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:33,134 INFO L225 Difference]: With dead ends: 1191 [2022-11-25 23:31:33,134 INFO L226 Difference]: Without dead ends: 1191 [2022-11-25 23:31:33,135 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 [2022-11-25 23:31:33,135 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 [2022-11-25 23:31:33,136 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] [2022-11-25 23:31:33,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-11-25 23:31:33,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1191. [2022-11-25 23:31:33,161 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) [2022-11-25 23:31:33,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1357 transitions. [2022-11-25 23:31:33,164 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1357 transitions. Word has length 73 [2022-11-25 23:31:33,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:33,164 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1357 transitions. [2022-11-25 23:31:33,165 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) [2022-11-25 23:31:33,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1357 transitions. [2022-11-25 23:31:33,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 23:31:33,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:33,181 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] [2022-11-25 23:31:33,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:33,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:33,382 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)] === [2022-11-25 23:31:33,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:33,383 INFO L85 PathProgramCache]: Analyzing trace with hash 483111072, now seen corresponding path program 1 times [2022-11-25 23:31:33,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:33,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780922482] [2022-11-25 23:31:33,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:33,383 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 [2022-11-25 23:31:33,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:33,384 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:33,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:33,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:31:33,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:33,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:31:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:34,016 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:34,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780922482] [2022-11-25 23:31:34,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780922482] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:31:34,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1046205183] [2022-11-25 23:31:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:34,017 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:31:34,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:31:34,055 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:31:34,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-25 23:31:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:34,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:31:34,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:34,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:31:34,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:34,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1046205183] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:31:34,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360380535] [2022-11-25 23:31:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:34,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:31:34,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:31:34,735 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:31:34,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-25 23:31:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:35,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:31:35,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:35,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:31:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:35,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360380535] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:31:35,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:31:35,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-25 23:31:35,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677311438] [2022-11-25 23:31:35,237 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:31:35,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:31:35,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:35,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:31:35,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:31:35,240 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) [2022-11-25 23:31:35,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:35,505 INFO L93 Difference]: Finished difference Result 1203 states and 1374 transitions. [2022-11-25 23:31:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:31:35,506 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 [2022-11-25 23:31:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:35,509 INFO L225 Difference]: With dead ends: 1203 [2022-11-25 23:31:35,510 INFO L226 Difference]: Without dead ends: 1203 [2022-11-25 23:31:35,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:31:35,510 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:31:35,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4168 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:31:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-11-25 23:31:35,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2022-11-25 23:31:35,532 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) [2022-11-25 23:31:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1372 transitions. [2022-11-25 23:31:35,534 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1372 transitions. Word has length 74 [2022-11-25 23:31:35,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:35,535 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1372 transitions. [2022-11-25 23:31:35,535 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) [2022-11-25 23:31:35,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1372 transitions. [2022-11-25 23:31:35,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 23:31:35,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:35,537 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] [2022-11-25 23:31:35,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-25 23:31:35,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:35,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-25 23:31:36,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:31:36,142 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)] === [2022-11-25 23:31:36,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:36,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1705595153, now seen corresponding path program 2 times [2022-11-25 23:31:36,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:36,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030174037] [2022-11-25 23:31:36,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:31:36,144 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 [2022-11-25 23:31:36,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:36,145 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:31:36,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:31:36,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:31:36,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:31:36,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 23:31:36,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:36,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:31:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:36,959 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:36,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030174037] [2022-11-25 23:31:36,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030174037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:31:36,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [220945651] [2022-11-25 23:31:36,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:31:36,960 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:31:36,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:31:36,961 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:31:36,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-25 23:31:38,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:31:38,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:31:38,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 23:31:38,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:38,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:31:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:38,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [220945651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:31:38,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874144266] [2022-11-25 23:31:38,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:31:38,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:31:38,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:31:38,867 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:31:38,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-25 23:32:14,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:32:14,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:32:14,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 23:32:14,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:14,561 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 23:32:14,561 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 [2022-11-25 23:32:14,570 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 [2022-11-25 23:32:14,638 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 [2022-11-25 23:32:14,654 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 [2022-11-25 23:32:14,898 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 [2022-11-25 23:32:14,905 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 [2022-11-25 23:32:15,060 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 [2022-11-25 23:32:15,219 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 [2022-11-25 23:32:15,237 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 [2022-11-25 23:32:15,295 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 23:32:15,296 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 [2022-11-25 23:32:15,312 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 [2022-11-25 23:32:15,428 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 [2022-11-25 23:32:15,436 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 [2022-11-25 23:32:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-25 23:32:15,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:32:16,034 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 [2022-11-25 23:32:16,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874144266] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:32:16,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-25 23:32:16,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-11-25 23:32:16,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661817043] [2022-11-25 23:32:16,044 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-25 23:32:16,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 23:32:16,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:32:16,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 23:32:16,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=460, Unknown=15, NotChecked=188, Total=756 [2022-11-25 23:32:16,047 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) [2022-11-25 23:32:19,388 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 [2022-11-25 23:32:24,102 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 [2022-11-25 23:32:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:49,701 INFO L93 Difference]: Finished difference Result 2758 states and 3315 transitions. [2022-11-25 23:32:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-25 23:32:49,702 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 [2022-11-25 23:32:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:49,708 INFO L225 Difference]: With dead ends: 2758 [2022-11-25 23:32:49,708 INFO L226 Difference]: Without dead ends: 2746 [2022-11-25 23:32:49,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=459, Invalid=2697, Unknown=60, NotChecked=690, Total=3906 [2022-11-25 23:32:49,710 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 2022 mSDsluCounter, 11829 mSDsCounter, 0 mSdLazyCounter, 11768 mSolverCounterSat, 40 mSolverCounterUnsat, 583 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 12756 SdHoareTripleChecker+Invalid, 19574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11768 IncrementalHoareTripleChecker+Invalid, 583 IncrementalHoareTripleChecker+Unknown, 7183 IncrementalHoareTripleChecker+Unchecked, 26.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:49,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2034 Valid, 12756 Invalid, 19574 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [40 Valid, 11768 Invalid, 583 Unknown, 7183 Unchecked, 26.8s Time] [2022-11-25 23:32:49,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-11-25 23:32:49,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1217. [2022-11-25 23:32:49,734 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) [2022-11-25 23:32:49,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1390 transitions. [2022-11-25 23:32:49,737 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1390 transitions. Word has length 77 [2022-11-25 23:32:49,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:49,738 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1390 transitions. [2022-11-25 23:32:49,738 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) [2022-11-25 23:32:49,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1390 transitions. [2022-11-25 23:32:49,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-25 23:32:49,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:49,739 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] [2022-11-25 23:32:49,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:32:49,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-11-25 23:32:50,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-25 23:32:50,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:50,355 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)] === [2022-11-25 23:32:50,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:50,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1677221554, now seen corresponding path program 1 times [2022-11-25 23:32:50,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:32:50,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854523691] [2022-11-25 23:32:50,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:50,356 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 [2022-11-25 23:32:50,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:32:50,358 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:32:50,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:32:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:50,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 23:32:50,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:50,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:32:51,649 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:51,649 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:32:51,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854523691] [2022-11-25 23:32:51,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854523691] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:32:51,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1222658863] [2022-11-25 23:32:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:51,650 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:32:51,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:32:51,651 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:32:51,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-25 23:32:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:52,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 23:32:52,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:52,487 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:52,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:32:52,689 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:52,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1222658863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:32:52,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660222273] [2022-11-25 23:32:52,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:52,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:52,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:52,691 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:32:52,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-25 23:32:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:53,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 23:32:53,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:53,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:32:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:54,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660222273] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:32:54,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:32:54,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2022-11-25 23:32:54,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154948748] [2022-11-25 23:32:54,350 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:32:54,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-25 23:32:54,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:32:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-25 23:32:54,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2022-11-25 23:32:54,352 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) [2022-11-25 23:32:58,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:58,117 INFO L93 Difference]: Finished difference Result 1254 states and 1438 transitions. [2022-11-25 23:32:58,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-25 23:32:58,124 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 [2022-11-25 23:32:58,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:58,136 INFO L225 Difference]: With dead ends: 1254 [2022-11-25 23:32:58,136 INFO L226 Difference]: Without dead ends: 1246 [2022-11-25 23:32:58,138 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 [2022-11-25 23:32:58,138 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, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:58,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 16755 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 23:32:58,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-11-25 23:32:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1228. [2022-11-25 23:32:58,156 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) [2022-11-25 23:32:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1403 transitions. [2022-11-25 23:32:58,159 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1403 transitions. Word has length 83 [2022-11-25 23:32:58,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:58,160 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 1403 transitions. [2022-11-25 23:32:58,160 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) [2022-11-25 23:32:58,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1403 transitions. [2022-11-25 23:32:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-25 23:32:58,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:58,161 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] [2022-11-25 23:32:58,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:32:58,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-25 23:32:58,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-25 23:32:58,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:58,780 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)] === [2022-11-25 23:32:58,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:58,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1527361039, now seen corresponding path program 3 times [2022-11-25 23:32:58,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:32:58,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702365929] [2022-11-25 23:32:58,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:32:58,781 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 [2022-11-25 23:32:58,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:32:58,782 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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) [2022-11-25 23:32:58,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/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 [2022-11-25 23:33:00,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-25 23:33:00,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:33:00,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 23:33:00,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:33:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:33:00,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:33:03,707 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:33:03,707 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:33:03,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702365929] [2022-11-25 23:33:03,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702365929] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:33:03,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1454593753] [2022-11-25 23:33:03,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:33:03,708 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:33:03,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:33:03,709 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:33:03,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-25 23:33:32,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-25 23:33:32,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:33:32,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 23:33:32,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:33:32,917 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:33:32,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:33:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:33:33,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1454593753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:33:33,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309264786] [2022-11-25 23:33:33,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:33:33,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:33:33,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:33:33,640 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:33:33,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a096d6d5-dd63-400c-b006-d730cb1e16dc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process