./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 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_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW --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 c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --- 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-4e7fbc6 [2022-11-23 14:07:53,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:07:53,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:07:53,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:07:53,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:07:53,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:07:53,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:07:53,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:07:53,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:07:53,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:07:53,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:07:53,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:07:53,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:07:53,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:07:53,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:07:53,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:07:53,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:07:53,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:07:53,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:07:53,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:07:53,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:07:53,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:07:53,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:07:53,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:07:53,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:07:53,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:07:53,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:07:53,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:07:53,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:07:53,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:07:53,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:07:53,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:07:53,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:07:53,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:07:53,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:07:53,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:07:53,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:07:53,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:07:53,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:07:53,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:07:53,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:07:53,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 14:07:53,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:07:53,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:07:53,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:07:53,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:07:53,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:07:53,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:07:53,504 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:07:53,504 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:07:53,505 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:07:53,505 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:07:53,506 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:07:53,506 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:07:53,506 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:07:53,507 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:07:53,507 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:07:53,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:07:53,507 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:07:53,507 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:07:53,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 14:07:53,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 14:07:53,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:07:53,509 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:07:53,509 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:07:53,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:07:53,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:07:53,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:07:53,510 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 14:07:53,511 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 14:07:53,512 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 14:07:53,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:07:53,512 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:07:53,512 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:07:53,513 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:07:53,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:07:53,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:07:53,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:07:53,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:07:53,514 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:07:53,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:07:53,514 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:07:53,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:07:53,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:07:53,515 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_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 [2022-11-23 14:07:53,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:07:53,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:07:53,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:07:53,884 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:07:53,885 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:07:53,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-23 14:07:57,102 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:07:57,325 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:07:57,325 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-23 14:07:57,335 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/data/a086bd717/939f4a3a5e884b9bacfb961a9a3fb322/FLAG4d145c943 [2022-11-23 14:07:57,355 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/data/a086bd717/939f4a3a5e884b9bacfb961a9a3fb322 [2022-11-23 14:07:57,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:07:57,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:07:57,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:07:57,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:07:57,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:07:57,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:57" (1/1) ... [2022-11-23 14:07:57,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f02e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:57, skipping insertion in model container [2022-11-23 14:07:57,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:57" (1/1) ... [2022-11-23 14:07:57,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:07:57,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:07:57,718 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_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-23 14:07:57,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:07:57,765 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) [2022-11-23 14:07:57,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c03f0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:57, skipping insertion in model container [2022-11-23 14:07:57,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:07:57,766 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-23 14:07:57,769 INFO L158 Benchmark]: Toolchain (without parser) took 402.30ms. Allocated memory is still 138.4MB. Free memory was 96.0MB in the beginning and 85.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:07:57,770 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 100.7MB. Free memory was 50.5MB in the beginning and 50.3MB in the end (delta: 153.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:07:57,771 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.12ms. Allocated memory is still 138.4MB. Free memory was 96.0MB in the beginning and 85.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:07:57,774 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 100.7MB. Free memory was 50.5MB in the beginning and 50.3MB in the end (delta: 153.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.12ms. Allocated memory is still 138.4MB. Free memory was 96.0MB in the beginning and 85.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 175]: 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_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW --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 c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --- 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-4e7fbc6 [2022-11-23 14:08:00,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:08:00,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:08:00,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:08:00,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:08:00,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:08:00,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:08:00,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:08:00,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:08:00,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:08:00,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:08:00,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:08:00,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:08:00,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:08:00,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:08:00,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:08:00,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:08:00,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:08:00,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:08:00,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:08:00,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:08:00,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:08:00,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:08:00,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:08:00,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:08:00,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:08:00,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:08:00,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:08:00,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:08:00,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:08:00,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:08:00,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:08:00,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:08:00,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:08:00,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:08:00,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:08:00,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:08:00,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:08:00,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:08:00,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:08:00,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:08:00,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-23 14:08:00,493 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:08:00,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:08:00,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:08:00,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:08:00,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:08:00,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:08:00,496 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:08:00,496 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:08:00,496 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:08:00,497 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:08:00,498 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:08:00,498 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:08:00,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 14:08:00,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 14:08:00,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:08:00,500 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:08:00,500 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:08:00,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:08:00,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:08:00,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:08:00,501 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 14:08:00,501 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 14:08:00,501 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 14:08:00,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:08:00,502 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:08:00,502 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:08:00,502 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:08:00,503 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:08:00,503 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:08:00,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:08:00,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:08:00,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:08:00,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:08:00,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:08:00,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:08:00,505 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:08:00,505 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:08:00,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:08:00,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:08:00,506 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_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 [2022-11-23 14:08:00,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:08:00,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:08:00,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:08:00,989 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:08:00,990 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:08:00,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-23 14:08:04,104 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:08:04,358 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:08:04,358 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-23 14:08:04,365 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/data/f0b720800/0e423b3835364836b708f02c2a94fef5/FLAGaa8f8985a [2022-11-23 14:08:04,378 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/data/f0b720800/0e423b3835364836b708f02c2a94fef5 [2022-11-23 14:08:04,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:08:04,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:08:04,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:08:04,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:08:04,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:08:04,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:04" (1/1) ... [2022-11-23 14:08:04,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad8cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04, skipping insertion in model container [2022-11-23 14:08:04,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:04" (1/1) ... [2022-11-23 14:08:04,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:08:04,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:08:04,616 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_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-23 14:08:04,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:08:04,656 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 14:08:04,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:08:04,683 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_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-23 14:08:04,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:08:04,696 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:08:04,730 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_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-23 14:08:04,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:08:04,776 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:08:04,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04 WrapperNode [2022-11-23 14:08:04,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:08:04,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:08:04,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:08:04,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:08:04,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04" (1/1) ... [2022-11-23 14:08:04,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04" (1/1) ... [2022-11-23 14:08:04,880 INFO L138 Inliner]: procedures = 31, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 367 [2022-11-23 14:08:04,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:08:04,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:08:04,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:08:04,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:08:04,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04" (1/1) ... [2022-11-23 14:08:04,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04" (1/1) ... [2022-11-23 14:08:04,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04" (1/1) ... [2022-11-23 14:08:04,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04" (1/1) ... [2022-11-23 14:08:04,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04" (1/1) ... [2022-11-23 14:08:04,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04" (1/1) ... [2022-11-23 14:08:04,955 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04" (1/1) ... [2022-11-23 14:08:04,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04" (1/1) ... [2022-11-23 14:08:04,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:08:04,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:08:04,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:08:04,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:08:04,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04" (1/1) ... [2022-11-23 14:08:04,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:08:05,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:08:05,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:08:05,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:08:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:08:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 14:08:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:08:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 14:08:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 14:08:05,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 14:08:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 14:08:05,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 14:08:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 14:08:05,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 14:08:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-23 14:08:05,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-23 14:08:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-23 14:08:05,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-23 14:08:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-23 14:08:05,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-23 14:08:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 14:08:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 14:08:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:08:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:08:05,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:08:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:08:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 14:08:05,089 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 14:08:05,244 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:08:05,246 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:08:06,230 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:08:06,619 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:08:06,619 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-23 14:08:06,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:08:06 BoogieIcfgContainer [2022-11-23 14:08:06,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:08:06,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:08:06,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:08:06,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:08:06,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:08:04" (1/3) ... [2022-11-23 14:08:06,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cfcbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:08:06, skipping insertion in model container [2022-11-23 14:08:06,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:04" (2/3) ... [2022-11-23 14:08:06,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cfcbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:08:06, skipping insertion in model container [2022-11-23 14:08:06,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:08:06" (3/3) ... [2022-11-23 14:08:06,636 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-11-23 14:08:06,659 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:08:06,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-23 14:08:06,660 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 14:08:06,896 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-23 14:08:06,956 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:08:06,987 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 336 places, 340 transitions, 752 flow [2022-11-23 14:08:06,994 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 336 places, 340 transitions, 752 flow [2022-11-23 14:08:07,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 340 transitions, 752 flow [2022-11-23 14:08:07,106 INFO L130 PetriNetUnfolder]: 21/290 cut-off events. [2022-11-23 14:08:07,106 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 14:08:07,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 290 events. 21/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 463 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 241. Up to 3 conditions per place. [2022-11-23 14:08:07,140 INFO L119 LiptonReduction]: Number of co-enabled transitions 13600 [2022-11-23 14:08:56,194 INFO L134 LiptonReduction]: Checked pairs total: 58216 [2022-11-23 14:08:56,194 INFO L136 LiptonReduction]: Total number of compositions: 318 [2022-11-23 14:08:56,203 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 127 places, 117 transitions, 306 flow [2022-11-23 14:08:59,854 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 58810 states, 53598 states have (on average 5.914045300197769) internal successors, (316981), 58809 states have internal predecessors, (316981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:08:59,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:08:59,881 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;@10a29c22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:08:59,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2022-11-23 14:08:59,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 58810 states, 53598 states have (on average 5.914045300197769) internal successors, (316981), 58809 states have internal predecessors, (316981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:00,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 14:09:00,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:00,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 14:09:00,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-23 14:09:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:00,022 INFO L85 PathProgramCache]: Analyzing trace with hash 52891, now seen corresponding path program 1 times [2022-11-23 14:09:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:09:00,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770139331] [2022-11-23 14:09:00,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:00,042 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 [2022-11-23 14:09:00,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:09:00,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:09:00,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:00,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:09:00,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:00,400 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2022-11-23 14:09:00,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 14:09:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:00,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:09:00,441 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:09:00,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770139331] [2022-11-23 14:09:00,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770139331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:09:00,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:09:00,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:09:00,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604786786] [2022-11-23 14:09:00,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:09:00,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:09:00,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:09:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:09:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:00,580 INFO L87 Difference]: Start difference. First operand has 58810 states, 53598 states have (on average 5.914045300197769) internal successors, (316981), 58809 states have internal predecessors, (316981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:02,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:02,733 INFO L93 Difference]: Finished difference Result 45842 states and 239941 transitions. [2022-11-23 14:09:02,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:09:02,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-23 14:09:02,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:03,600 INFO L225 Difference]: With dead ends: 45842 [2022-11-23 14:09:03,600 INFO L226 Difference]: Without dead ends: 45842 [2022-11-23 14:09:03,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:03,605 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 84 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:03,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 36 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:09:03,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45842 states. [2022-11-23 14:09:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45842 to 44884. [2022-11-23 14:09:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44884 states, 41274 states have (on average 5.741507971119833) internal successors, (236975), 44883 states have internal predecessors, (236975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44884 states to 44884 states and 236975 transitions. [2022-11-23 14:09:07,348 INFO L78 Accepts]: Start accepts. Automaton has 44884 states and 236975 transitions. Word has length 2 [2022-11-23 14:09:07,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:07,349 INFO L495 AbstractCegarLoop]: Abstraction has 44884 states and 236975 transitions. [2022-11-23 14:09:07,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:07,349 INFO L276 IsEmpty]: Start isEmpty. Operand 44884 states and 236975 transitions. [2022-11-23 14:09:07,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 14:09:07,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:07,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 14:09:07,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-23 14:09:07,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:09:07,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-23 14:09:07,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:07,563 INFO L85 PathProgramCache]: Analyzing trace with hash 52892, now seen corresponding path program 1 times [2022-11-23 14:09:07,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:09:07,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416758799] [2022-11-23 14:09:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:07,564 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 [2022-11-23 14:09:07,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:09:07,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:09:07,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:07,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 14:09:07,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:07,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:07,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:07,774 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:09:07,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-23 14:09:07,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-23 14:09:07,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:07,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:09:07,824 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:09:07,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416758799] [2022-11-23 14:09:07,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416758799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:09:07,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:09:07,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:09:07,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200079023] [2022-11-23 14:09:07,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:09:07,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:09:07,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:09:07,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:09:07,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:07,827 INFO L87 Difference]: Start difference. First operand 44884 states and 236975 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:08,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:08,561 INFO L93 Difference]: Finished difference Result 30483 states and 155134 transitions. [2022-11-23 14:09:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:09:08,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-23 14:09:08,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:09,363 INFO L225 Difference]: With dead ends: 30483 [2022-11-23 14:09:09,364 INFO L226 Difference]: Without dead ends: 30483 [2022-11-23 14:09:09,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:09,369 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 87 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:09,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:09:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30483 states. [2022-11-23 14:09:10,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30483 to 30483. [2022-11-23 14:09:10,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30483 states, 28555 states have (on average 5.432813867974085) internal successors, (155134), 30482 states have internal predecessors, (155134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30483 states to 30483 states and 155134 transitions. [2022-11-23 14:09:11,045 INFO L78 Accepts]: Start accepts. Automaton has 30483 states and 155134 transitions. Word has length 2 [2022-11-23 14:09:11,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:11,045 INFO L495 AbstractCegarLoop]: Abstraction has 30483 states and 155134 transitions. [2022-11-23 14:09:11,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 30483 states and 155134 transitions. [2022-11-23 14:09:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 14:09:11,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:11,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 14:09:11,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:09:11,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:09:11,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-23 14:09:11,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:11,262 INFO L85 PathProgramCache]: Analyzing trace with hash 52661, now seen corresponding path program 1 times [2022-11-23 14:09:11,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:09:11,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810220547] [2022-11-23 14:09:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:11,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:09:11,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:09:11,268 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:09:11,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:11,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:09:11,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:11,440 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-23 14:09:11,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-23 14:09:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:11,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:09:11,454 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:09:11,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810220547] [2022-11-23 14:09:11,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810220547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:09:11,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:09:11,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:09:11,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153188738] [2022-11-23 14:09:11,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:09:11,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:09:11,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:09:11,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:09:11,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:11,456 INFO L87 Difference]: Start difference. First operand 30483 states and 155134 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:12,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:12,656 INFO L93 Difference]: Finished difference Result 30482 states and 155133 transitions. [2022-11-23 14:09:12,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:09:12,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-23 14:09:12,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:12,900 INFO L225 Difference]: With dead ends: 30482 [2022-11-23 14:09:12,900 INFO L226 Difference]: Without dead ends: 30482 [2022-11-23 14:09:12,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:12,902 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 75 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:12,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 36 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:09:13,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30482 states. [2022-11-23 14:09:14,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30482 to 30482. [2022-11-23 14:09:14,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30482 states, 28555 states have (on average 5.432778847837507) internal successors, (155133), 30481 states have internal predecessors, (155133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30482 states to 30482 states and 155133 transitions. [2022-11-23 14:09:14,444 INFO L78 Accepts]: Start accepts. Automaton has 30482 states and 155133 transitions. Word has length 2 [2022-11-23 14:09:14,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:14,445 INFO L495 AbstractCegarLoop]: Abstraction has 30482 states and 155133 transitions. [2022-11-23 14:09:14,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:14,445 INFO L276 IsEmpty]: Start isEmpty. Operand 30482 states and 155133 transitions. [2022-11-23 14:09:14,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 14:09:14,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:14,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 14:09:14,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:14,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:09:14,646 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-23 14:09:14,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:14,646 INFO L85 PathProgramCache]: Analyzing trace with hash 52662, now seen corresponding path program 1 times [2022-11-23 14:09:14,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:09:14,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369928326] [2022-11-23 14:09:14,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:14,647 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 [2022-11-23 14:09:14,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:09:14,648 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:09:14,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:14,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 14:09:14,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:14,831 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-23 14:09:14,832 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-23 14:09:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:14,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:09:14,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:09:14,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369928326] [2022-11-23 14:09:14,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369928326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:09:14,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:09:14,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:09:14,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060954095] [2022-11-23 14:09:14,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:09:14,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:09:14,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:09:14,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:09:14,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:14,871 INFO L87 Difference]: Start difference. First operand 30482 states and 155133 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:15,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:15,636 INFO L93 Difference]: Finished difference Result 30492 states and 155153 transitions. [2022-11-23 14:09:15,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:09:15,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-23 14:09:15,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:15,829 INFO L225 Difference]: With dead ends: 30492 [2022-11-23 14:09:15,829 INFO L226 Difference]: Without dead ends: 30492 [2022-11-23 14:09:15,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:15,830 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:15,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 50 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:09:15,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30492 states. [2022-11-23 14:09:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30492 to 30483. [2022-11-23 14:09:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30483 states, 28556 states have (on average 5.432658635663258) internal successors, (155135), 30482 states have internal predecessors, (155135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:17,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30483 states to 30483 states and 155135 transitions. [2022-11-23 14:09:17,326 INFO L78 Accepts]: Start accepts. Automaton has 30483 states and 155135 transitions. Word has length 2 [2022-11-23 14:09:17,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:17,327 INFO L495 AbstractCegarLoop]: Abstraction has 30483 states and 155135 transitions. [2022-11-23 14:09:17,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:17,327 INFO L276 IsEmpty]: Start isEmpty. Operand 30483 states and 155135 transitions. [2022-11-23 14:09:17,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 14:09:17,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:17,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 14:09:17,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:17,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:09:17,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-23 14:09:17,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:17,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1640017, now seen corresponding path program 1 times [2022-11-23 14:09:17,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:09:17,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832389764] [2022-11-23 14:09:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:17,531 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 [2022-11-23 14:09:17,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:09:17,532 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:09:17,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:17,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 14:09:17,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:17,707 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-23 14:09:17,708 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-23 14:09:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:17,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:09:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:18,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:09:18,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832389764] [2022-11-23 14:09:18,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832389764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:09:18,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [159116082] [2022-11-23 14:09:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:18,040 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:09:18,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:09:18,042 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:09:18,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-23 14:09:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:18,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 14:09:18,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:18,836 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-23 14:09:18,837 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-23 14:09:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:18,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:09:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:18,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [159116082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:09:18,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325557170] [2022-11-23 14:09:18,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:18,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:09:18,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:09:18,979 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:09:19,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:09:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:19,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 14:09:19,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:19,179 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-23 14:09:19,179 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-23 14:09:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:19,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:09:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:19,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325557170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:09:19,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:09:19,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 6 [2022-11-23 14:09:19,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080065492] [2022-11-23 14:09:19,416 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:09:19,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:09:19,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:09:19,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:09:19,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:09:19,417 INFO L87 Difference]: Start difference. First operand 30483 states and 155135 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:21,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:21,448 INFO L93 Difference]: Finished difference Result 30523 states and 155217 transitions. [2022-11-23 14:09:21,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:09:21,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 14:09:21,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:21,592 INFO L225 Difference]: With dead ends: 30523 [2022-11-23 14:09:21,593 INFO L226 Difference]: Without dead ends: 30523 [2022-11-23 14:09:21,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:09:21,593 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 82 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:21,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 92 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 14:09:21,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30523 states. [2022-11-23 14:09:22,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30523 to 30486. [2022-11-23 14:09:22,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30486 states, 28559 states have (on average 5.432298049651599) internal successors, (155141), 30485 states have internal predecessors, (155141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30486 states to 30486 states and 155141 transitions. [2022-11-23 14:09:23,139 INFO L78 Accepts]: Start accepts. Automaton has 30486 states and 155141 transitions. Word has length 3 [2022-11-23 14:09:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:23,140 INFO L495 AbstractCegarLoop]: Abstraction has 30486 states and 155141 transitions. [2022-11-23 14:09:23,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 30486 states and 155141 transitions. [2022-11-23 14:09:23,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:09:23,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:23,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 14:09:23,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:09:23,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-11-23 14:09:23,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:23,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:09:23,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-23 14:09:23,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:23,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1639843494, now seen corresponding path program 1 times [2022-11-23 14:09:23,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:09:23,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974615616] [2022-11-23 14:09:23,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:23,743 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 [2022-11-23 14:09:23,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:09:23,747 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:09:23,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:23,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:09:23,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:23,905 INFO L321 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2022-11-23 14:09:23,905 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 2 case distinctions, treesize of input 12 treesize of output 29 [2022-11-23 14:09:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:23,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:09:23,937 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:09:23,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974615616] [2022-11-23 14:09:23,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974615616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:09:23,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:09:23,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:09:23,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755056370] [2022-11-23 14:09:23,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:09:23,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:09:23,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:09:23,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:09:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:23,939 INFO L87 Difference]: Start difference. First operand 30486 states and 155141 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:24,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:24,778 INFO L93 Difference]: Finished difference Result 31318 states and 158169 transitions. [2022-11-23 14:09:24,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:09:24,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 14:09:24,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:25,679 INFO L225 Difference]: With dead ends: 31318 [2022-11-23 14:09:25,679 INFO L226 Difference]: Without dead ends: 31318 [2022-11-23 14:09:25,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:25,680 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 76 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:25,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 35 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:09:25,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31318 states. [2022-11-23 14:09:26,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31318 to 30723. [2022-11-23 14:09:26,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30723 states, 28836 states have (on average 5.415938410320432) internal successors, (156174), 30722 states have internal predecessors, (156174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:27,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30723 states to 30723 states and 156174 transitions. [2022-11-23 14:09:27,206 INFO L78 Accepts]: Start accepts. Automaton has 30723 states and 156174 transitions. Word has length 6 [2022-11-23 14:09:27,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:27,207 INFO L495 AbstractCegarLoop]: Abstraction has 30723 states and 156174 transitions. [2022-11-23 14:09:27,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:27,207 INFO L276 IsEmpty]: Start isEmpty. Operand 30723 states and 156174 transitions. [2022-11-23 14:09:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:09:27,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:27,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 14:09:27,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:27,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:09:27,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-23 14:09:27,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:27,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1639843495, now seen corresponding path program 1 times [2022-11-23 14:09:27,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:09:27,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359661678] [2022-11-23 14:09:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:27,425 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 [2022-11-23 14:09:27,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:09:27,426 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:09:27,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:27,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 14:09:27,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:27,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:27,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:27,569 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:09:27,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-23 14:09:27,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-23 14:09:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:27,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:09:27,615 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:09:27,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359661678] [2022-11-23 14:09:27,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359661678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:09:27,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:09:27,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:09:27,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428400581] [2022-11-23 14:09:27,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:09:27,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:09:27,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:09:27,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:09:27,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:27,616 INFO L87 Difference]: Start difference. First operand 30723 states and 156174 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:28,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:28,129 INFO L93 Difference]: Finished difference Result 30483 states and 155254 transitions. [2022-11-23 14:09:28,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:09:28,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 14:09:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:28,341 INFO L225 Difference]: With dead ends: 30483 [2022-11-23 14:09:28,341 INFO L226 Difference]: Without dead ends: 30483 [2022-11-23 14:09:28,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:28,342 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 80 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:28,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 17 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:09:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30483 states. [2022-11-23 14:09:29,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30483 to 30483. [2022-11-23 14:09:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30483 states, 28678 states have (on average 5.413696910523746) internal successors, (155254), 30482 states have internal predecessors, (155254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30483 states to 30483 states and 155254 transitions. [2022-11-23 14:09:29,732 INFO L78 Accepts]: Start accepts. Automaton has 30483 states and 155254 transitions. Word has length 6 [2022-11-23 14:09:29,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:29,732 INFO L495 AbstractCegarLoop]: Abstraction has 30483 states and 155254 transitions. [2022-11-23 14:09:29,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:29,732 INFO L276 IsEmpty]: Start isEmpty. Operand 30483 states and 155254 transitions. [2022-11-23 14:09:29,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:09:29,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:29,733 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-23 14:09:29,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:29,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:09:29,933 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-23 14:09:29,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:29,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1620548726, now seen corresponding path program 2 times [2022-11-23 14:09:29,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:09:29,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942775276] [2022-11-23 14:09:29,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:09:29,934 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 [2022-11-23 14:09:29,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:09:29,935 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:09:29,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:30,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:09:30,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:09:30,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 14:09:30,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:30,110 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-23 14:09:30,110 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-23 14:09:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:30,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:09:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:31,173 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:09:31,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942775276] [2022-11-23 14:09:31,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942775276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:09:31,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [951864157] [2022-11-23 14:09:31,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:09:31,173 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:09:31,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:09:31,174 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:09:31,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-23 14:09:31,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:09:31,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:09:31,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 14:09:31,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:31,467 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-23 14:09:31,467 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-23 14:09:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:31,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:09:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:31,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [951864157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:09:31,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444261344] [2022-11-23 14:09:31,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:09:31,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:09:31,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:09:31,739 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:09:31,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 14:09:31,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:09:31,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:09:31,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 14:09:31,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:31,970 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-23 14:09:31,971 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-23 14:09:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:32,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:09:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:32,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444261344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:09:32,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:09:32,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 10 [2022-11-23 14:09:32,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961859187] [2022-11-23 14:09:32,284 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:09:32,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:09:32,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:09:32,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:09:32,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:09:32,285 INFO L87 Difference]: Start difference. First operand 30483 states and 155254 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:40,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:40,271 INFO L93 Difference]: Finished difference Result 30568 states and 155428 transitions. [2022-11-23 14:09:40,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 14:09:40,271 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 14:09:40,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:40,468 INFO L225 Difference]: With dead ends: 30568 [2022-11-23 14:09:40,468 INFO L226 Difference]: Without dead ends: 30568 [2022-11-23 14:09:40,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:09:40,468 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 207 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:40,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 148 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-23 14:09:40,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30568 states. [2022-11-23 14:09:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30568 to 30489. [2022-11-23 14:09:41,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30489 states, 28684 states have (on average 5.412982847580532) internal successors, (155266), 30488 states have internal predecessors, (155266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30489 states to 30489 states and 155266 transitions. [2022-11-23 14:09:42,184 INFO L78 Accepts]: Start accepts. Automaton has 30489 states and 155266 transitions. Word has length 6 [2022-11-23 14:09:42,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:42,185 INFO L495 AbstractCegarLoop]: Abstraction has 30489 states and 155266 transitions. [2022-11-23 14:09:42,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:42,185 INFO L276 IsEmpty]: Start isEmpty. Operand 30489 states and 155266 transitions. [2022-11-23 14:09:42,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:09:42,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:42,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:09:42,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 14:09:42,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-23 14:09:42,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:42,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:09:42,787 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-23 14:09:42,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:42,787 INFO L85 PathProgramCache]: Analyzing trace with hash -694397132, now seen corresponding path program 1 times [2022-11-23 14:09:42,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:09:42,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945854456] [2022-11-23 14:09:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:42,788 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 [2022-11-23 14:09:42,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:09:42,789 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:09:42,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:42,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:09:42,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:42,898 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 [2022-11-23 14:09:42,917 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 14:09:42,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:09:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:42,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:09:42,931 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:09:42,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945854456] [2022-11-23 14:09:42,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945854456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:09:42,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:09:42,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:09:42,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415954750] [2022-11-23 14:09:42,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:09:42,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:09:42,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:09:42,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:09:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:42,936 INFO L87 Difference]: Start difference. First operand 30489 states and 155266 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) [2022-11-23 14:09:43,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:43,670 INFO L93 Difference]: Finished difference Result 27009 states and 133992 transitions. [2022-11-23 14:09:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:09:43,671 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 [2022-11-23 14:09:43,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:43,809 INFO L225 Difference]: With dead ends: 27009 [2022-11-23 14:09:43,809 INFO L226 Difference]: Without dead ends: 27009 [2022-11-23 14:09:43,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:43,810 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 66 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:43,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 53 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:09:43,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27009 states. [2022-11-23 14:09:44,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27009 to 26631. [2022-11-23 14:09:44,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26631 states, 25226 states have (on average 5.265638626813605) internal successors, (132831), 26630 states have internal predecessors, (132831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:45,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26631 states to 26631 states and 132831 transitions. [2022-11-23 14:09:45,079 INFO L78 Accepts]: Start accepts. Automaton has 26631 states and 132831 transitions. Word has length 8 [2022-11-23 14:09:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:45,079 INFO L495 AbstractCegarLoop]: Abstraction has 26631 states and 132831 transitions. [2022-11-23 14:09:45,079 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) [2022-11-23 14:09:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand 26631 states and 132831 transitions. [2022-11-23 14:09:45,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:09:45,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:45,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:09:45,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:45,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:09:45,280 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-23 14:09:45,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:45,281 INFO L85 PathProgramCache]: Analyzing trace with hash -694397131, now seen corresponding path program 1 times [2022-11-23 14:09:45,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:09:45,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140292562] [2022-11-23 14:09:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:45,281 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 [2022-11-23 14:09:45,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:09:45,282 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:09:45,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:45,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:09:45,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:45,410 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 [2022-11-23 14:09:45,445 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:09:45,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-23 14:09:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:45,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:09:45,478 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:09:45,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140292562] [2022-11-23 14:09:45,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140292562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:09:45,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:09:45,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:09:45,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019590179] [2022-11-23 14:09:45,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:09:45,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:09:45,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:09:45,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:09:45,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:45,480 INFO L87 Difference]: Start difference. First operand 26631 states and 132831 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) [2022-11-23 14:09:46,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:46,066 INFO L93 Difference]: Finished difference Result 22449 states and 108962 transitions. [2022-11-23 14:09:46,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:09:46,067 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 [2022-11-23 14:09:46,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:46,182 INFO L225 Difference]: With dead ends: 22449 [2022-11-23 14:09:46,182 INFO L226 Difference]: Without dead ends: 22449 [2022-11-23 14:09:46,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:46,183 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 68 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:46,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 46 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:09:46,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22449 states. [2022-11-23 14:09:47,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22449 to 22449. [2022-11-23 14:09:47,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22449 states, 21464 states have (on average 5.076500186358554) internal successors, (108962), 22448 states have internal predecessors, (108962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22449 states to 22449 states and 108962 transitions. [2022-11-23 14:09:47,318 INFO L78 Accepts]: Start accepts. Automaton has 22449 states and 108962 transitions. Word has length 8 [2022-11-23 14:09:47,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:47,318 INFO L495 AbstractCegarLoop]: Abstraction has 22449 states and 108962 transitions. [2022-11-23 14:09:47,318 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) [2022-11-23 14:09:47,318 INFO L276 IsEmpty]: Start isEmpty. Operand 22449 states and 108962 transitions. [2022-11-23 14:09:47,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 14:09:47,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:47,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:09:47,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:47,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:09:47,523 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-23 14:09:47,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:47,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1595672752, now seen corresponding path program 1 times [2022-11-23 14:09:47,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:09:47,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645001112] [2022-11-23 14:09:47,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:47,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:09:47,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:09:47,525 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:09:47,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:47,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 14:09:47,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:47,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:09:47,798 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:09:47,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645001112] [2022-11-23 14:09:47,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645001112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:09:47,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:09:47,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:09:47,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165435722] [2022-11-23 14:09:47,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:09:47,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:09:47,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:09:47,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:09:47,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:09:47,800 INFO L87 Difference]: Start difference. First operand 22449 states and 108962 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:48,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:48,583 INFO L93 Difference]: Finished difference Result 31930 states and 149303 transitions. [2022-11-23 14:09:48,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:09:48,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-23 14:09:48,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:48,744 INFO L225 Difference]: With dead ends: 31930 [2022-11-23 14:09:48,744 INFO L226 Difference]: Without dead ends: 31910 [2022-11-23 14:09:48,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:09:48,745 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 132 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:48,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 102 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:09:48,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31910 states. [2022-11-23 14:09:50,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31910 to 30914. [2022-11-23 14:09:50,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30914 states, 29888 states have (on average 4.900127141327623) internal successors, (146455), 30913 states have internal predecessors, (146455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30914 states to 30914 states and 146455 transitions. [2022-11-23 14:09:50,354 INFO L78 Accepts]: Start accepts. Automaton has 30914 states and 146455 transitions. Word has length 10 [2022-11-23 14:09:50,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:50,354 INFO L495 AbstractCegarLoop]: Abstraction has 30914 states and 146455 transitions. [2022-11-23 14:09:50,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:50,355 INFO L276 IsEmpty]: Start isEmpty. Operand 30914 states and 146455 transitions. [2022-11-23 14:09:50,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:09:50,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:50,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:09:50,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-23 14:09:50,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:09:50,560 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-23 14:09:50,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:50,560 INFO L85 PathProgramCache]: Analyzing trace with hash -961321749, now seen corresponding path program 1 times [2022-11-23 14:09:50,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:09:50,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103366665] [2022-11-23 14:09:50,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:50,561 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 [2022-11-23 14:09:50,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:09:50,562 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:09:50,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:50,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 14:09:50,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:50,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:09:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:51,079 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:09:51,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103366665] [2022-11-23 14:09:51,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103366665] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:09:51,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [252115824] [2022-11-23 14:09:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:51,080 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:09:51,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:09:51,081 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:09:51,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-23 14:09:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:51,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 14:09:51,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:51,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:09:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:51,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [252115824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:09:51,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355670036] [2022-11-23 14:09:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:51,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:09:51,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:09:51,703 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:09:51,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-23 14:09:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:51,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 14:09:51,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:52,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:09:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:52,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355670036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:09:52,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:09:52,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 12 [2022-11-23 14:09:52,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440856487] [2022-11-23 14:09:52,054 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:09:52,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:09:52,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:09:52,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:09:52,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:09:52,056 INFO L87 Difference]: Start difference. First operand 30914 states and 146455 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:55,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:55,204 INFO L93 Difference]: Finished difference Result 61598 states and 276166 transitions. [2022-11-23 14:09:55,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:09:55,205 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2022-11-23 14:09:55,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:55,644 INFO L225 Difference]: With dead ends: 61598 [2022-11-23 14:09:55,645 INFO L226 Difference]: Without dead ends: 61598 [2022-11-23 14:09:55,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:09:55,646 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 1369 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:55,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 367 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-23 14:09:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61598 states. [2022-11-23 14:09:57,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61598 to 36669. [2022-11-23 14:09:57,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36669 states, 35643 states have (on average 4.851976545184187) internal successors, (172939), 36668 states have internal predecessors, (172939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36669 states to 36669 states and 172939 transitions. [2022-11-23 14:09:57,301 INFO L78 Accepts]: Start accepts. Automaton has 36669 states and 172939 transitions. Word has length 11 [2022-11-23 14:09:57,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:57,301 INFO L495 AbstractCegarLoop]: Abstraction has 36669 states and 172939 transitions. [2022-11-23 14:09:57,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:57,302 INFO L276 IsEmpty]: Start isEmpty. Operand 36669 states and 172939 transitions. [2022-11-23 14:09:57,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:09:57,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:57,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:09:57,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:57,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-23 14:09:57,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-23 14:09:57,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:09:57,906 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-23 14:09:57,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:57,907 INFO L85 PathProgramCache]: Analyzing trace with hash -138126321, now seen corresponding path program 1 times [2022-11-23 14:09:57,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:09:57,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146808583] [2022-11-23 14:09:57,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:57,907 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 [2022-11-23 14:09:57,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:09:57,909 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:09:57,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6bc8f5-d313-4f58-a30e-90c4bda8aa57/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:09:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:58,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:09:58,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:58,044 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 [2022-11-23 14:09:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:58,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:09:58,088 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:09:58,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146808583] [2022-11-23 14:09:58,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146808583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:09:58,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:09:58,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:09:58,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912053421] [2022-11-23 14:09:58,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:09:58,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:09:58,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:09:58,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:09:58,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:58,093 INFO L87 Difference]: Start difference. First operand 36669 states and 172939 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:59,352 INFO L93 Difference]: Finished difference Result 34209 states and 159851 transitions. [2022-11-23 14:09:59,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:09:59,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-23 14:09:59,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:59,658 INFO L225 Difference]: With dead ends: 34209 [2022-11-23 14:09:59,658 INFO L226 Difference]: Without dead ends: 34209 [2022-11-23 14:09:59,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:59,659 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 64 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:59,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 46 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:09:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34209 states. [2022-11-23 14:10:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34209 to 34209. [2022-11-23 14:10:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34209 states, 33435 states have (on average 4.780948108269778) internal successors, (159851), 34208 states have internal predecessors, (159851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)