./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:27:26,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:27:26,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:27:26,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:27:26,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:27:26,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:27:26,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:27:26,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:27:26,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:27:26,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:27:26,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:27:26,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:27:26,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:27:26,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:27:26,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:27:26,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:27:26,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:27:26,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:27:26,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:27:26,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:27:26,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:27:26,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:27:26,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:27:26,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:27:26,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:27:26,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:27:26,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:27:26,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:27:26,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:27:26,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:27:26,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:27:26,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:27:26,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:27:26,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:27:26,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:27:26,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:27:26,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:27:26,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:27:26,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:27:26,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:27:26,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:27:26,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-26 00:27:26,119 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:27:26,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:27:26,121 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:27:26,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:27:26,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:27:26,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:27:26,123 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:27:26,123 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:27:26,124 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:27:26,124 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:27:26,125 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:27:26,125 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:27:26,126 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:27:26,126 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:27:26,126 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:27:26,126 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:27:26,126 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:27:26,127 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:27:26,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 00:27:26,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 00:27:26,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:27:26,128 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:27:26,128 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:27:26,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:27:26,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:27:26,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:27:26,130 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 00:27:26,130 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 00:27:26,130 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 00:27:26,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:27:26,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:27:26,131 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:27:26,131 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:27:26,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:27:26,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:27:26,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:27:26,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:27:26,133 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:27:26,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:27:26,133 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:27:26,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:27:26,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:27:26,135 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_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-11-26 00:27:26,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:27:26,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:27:26,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:27:26,487 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:27:26,488 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:27:26,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-26 00:27:29,587 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:27:29,781 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:27:29,781 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-26 00:27:29,802 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/data/004e141a5/c6763d91f463405d92a69db6e4260593/FLAG5514b3e38 [2022-11-26 00:27:29,819 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/data/004e141a5/c6763d91f463405d92a69db6e4260593 [2022-11-26 00:27:29,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:27:29,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:27:29,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:27:29,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:27:29,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:27:29,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:27:29" (1/1) ... [2022-11-26 00:27:29,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc9803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:29, skipping insertion in model container [2022-11-26 00:27:29,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:27:29" (1/1) ... [2022-11-26 00:27:29,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:27:29,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:27:30,210 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_c02bc853-bad6-451a-a7a4-27c1f8283aff/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-26 00:27:30,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:27:30,232 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-26 00:27:30,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2119001e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:30, skipping insertion in model container [2022-11-26 00:27:30,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:27:30,234 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-26 00:27:30,236 INFO L158 Benchmark]: Toolchain (without parser) took 406.07ms. Allocated memory is still 151.0MB. Free memory was 106.5MB in the beginning and 115.9MB in the end (delta: -9.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:27:30,237 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 107.0MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:27:30,237 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.54ms. Allocated memory is still 151.0MB. Free memory was 106.5MB in the beginning and 115.9MB in the end (delta: -9.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:27:30,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 107.0MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.54ms. Allocated memory is still 151.0MB. Free memory was 106.5MB in the beginning and 115.9MB in the end (delta: -9.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 122]: 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_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:27:32,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:27:32,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:27:32,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:27:32,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:27:32,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:27:32,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:27:32,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:27:32,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:27:32,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:27:32,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:27:32,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:27:32,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:27:32,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:27:32,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:27:32,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:27:32,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:27:32,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:27:32,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:27:32,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:27:32,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:27:32,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:27:32,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:27:32,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:27:32,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:27:32,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:27:32,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:27:32,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:27:32,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:27:32,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:27:32,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:27:32,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:27:32,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:27:32,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:27:32,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:27:32,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:27:32,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:27:32,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:27:32,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:27:32,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:27:32,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:27:32,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-26 00:27:32,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:27:32,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:27:32,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:27:32,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:27:32,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:27:32,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:27:32,846 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:27:32,847 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:27:32,847 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:27:32,847 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:27:32,848 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:27:32,848 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:27:32,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 00:27:32,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 00:27:32,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:27:32,850 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:27:32,850 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:27:32,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:27:32,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:27:32,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:27:32,851 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 00:27:32,851 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 00:27:32,851 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 00:27:32,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:27:32,852 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:27:32,852 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:27:32,852 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:27:32,852 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:27:32,853 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:27:32,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:27:32,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:27:32,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:27:32,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:27:32,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:27:32,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:27:32,854 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:27:32,855 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:27:32,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:27:32,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:27:32,855 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_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-11-26 00:27:33,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:27:33,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:27:33,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:27:33,270 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:27:33,271 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:27:33,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-26 00:27:36,378 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:27:36,647 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:27:36,659 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-26 00:27:36,669 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/data/ea4fe84bd/f421967f8a5c4f48b078d62d0c143857/FLAG986a9e0fb [2022-11-26 00:27:36,699 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/data/ea4fe84bd/f421967f8a5c4f48b078d62d0c143857 [2022-11-26 00:27:36,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:27:36,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:27:36,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:27:36,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:27:36,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:27:36,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:27:36" (1/1) ... [2022-11-26 00:27:36,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d394e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:36, skipping insertion in model container [2022-11-26 00:27:36,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:27:36" (1/1) ... [2022-11-26 00:27:36,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:27:36,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:27:37,023 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_c02bc853-bad6-451a-a7a4-27c1f8283aff/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-26 00:27:37,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:27:37,076 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-26 00:27:37,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:27:37,115 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_c02bc853-bad6-451a-a7a4-27c1f8283aff/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-26 00:27:37,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:27:37,137 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:27:37,182 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_c02bc853-bad6-451a-a7a4-27c1f8283aff/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-26 00:27:37,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:27:37,206 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:27:37,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:37 WrapperNode [2022-11-26 00:27:37,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:27:37,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:27:37,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:27:37,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:27:37,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:37" (1/1) ... [2022-11-26 00:27:37,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:37" (1/1) ... [2022-11-26 00:27:37,264 INFO L138 Inliner]: procedures = 27, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 201 [2022-11-26 00:27:37,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:27:37,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:27:37,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:27:37,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:27:37,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:37" (1/1) ... [2022-11-26 00:27:37,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:37" (1/1) ... [2022-11-26 00:27:37,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:37" (1/1) ... [2022-11-26 00:27:37,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:37" (1/1) ... [2022-11-26 00:27:37,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:37" (1/1) ... [2022-11-26 00:27:37,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:37" (1/1) ... [2022-11-26 00:27:37,334 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:37" (1/1) ... [2022-11-26 00:27:37,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:37" (1/1) ... [2022-11-26 00:27:37,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:27:37,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:27:37,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:27:37,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:27:37,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:37" (1/1) ... [2022-11-26 00:27:37,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:27:37,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:27:37,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:27:37,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:27:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:27:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 00:27:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:27:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-26 00:27:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-26 00:27:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-26 00:27:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-26 00:27:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-26 00:27:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:27:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:27:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:27:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:27:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-26 00:27:37,461 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 00:27:37,580 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:27:37,582 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:27:38,213 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:27:38,227 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:27:38,227 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-26 00:27:38,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:27:38 BoogieIcfgContainer [2022-11-26 00:27:38,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:27:38,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:27:38,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:27:38,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:27:38,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:27:36" (1/3) ... [2022-11-26 00:27:38,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d0517f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:27:38, skipping insertion in model container [2022-11-26 00:27:38,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:37" (2/3) ... [2022-11-26 00:27:38,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d0517f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:27:38, skipping insertion in model container [2022-11-26 00:27:38,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:27:38" (3/3) ... [2022-11-26 00:27:38,243 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2022-11-26 00:27:38,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:27:38,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-26 00:27:38,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 00:27:38,451 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-26 00:27:38,488 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:27:38,503 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 278 transitions, 572 flow [2022-11-26 00:27:38,507 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 278 transitions, 572 flow [2022-11-26 00:27:38,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 278 transitions, 572 flow [2022-11-26 00:27:38,652 INFO L130 PetriNetUnfolder]: 19/276 cut-off events. [2022-11-26 00:27:38,656 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-26 00:27:38,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 276 events. 19/276 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 559 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2022-11-26 00:27:38,679 INFO L119 LiptonReduction]: Number of co-enabled transitions 13348 [2022-11-26 00:28:04,569 INFO L134 LiptonReduction]: Checked pairs total: 12429 [2022-11-26 00:28:04,569 INFO L136 LiptonReduction]: Total number of compositions: 325 [2022-11-26 00:28:04,578 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 86 flow [2022-11-26 00:28:04,602 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 150 states, 106 states have (on average 3.452830188679245) internal successors, (366), 149 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:04,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:28:04,628 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;@46b17cb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:28:04,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-26 00:28:04,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 106 states have (on average 3.452830188679245) internal successors, (366), 149 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:04,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-26 00:28:04,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:04,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-26 00:28:04,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:04,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:04,643 INFO L85 PathProgramCache]: Analyzing trace with hash 36372, now seen corresponding path program 1 times [2022-11-26 00:28:04,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:04,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549649108] [2022-11-26 00:28:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:04,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:04,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:04,662 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:04,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:28:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:04,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:28:04,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:04,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:04,893 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:04,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549649108] [2022-11-26 00:28:04,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549649108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:04,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:04,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:04,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606223575] [2022-11-26 00:28:04,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:04,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:04,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:04,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:04,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:04,969 INFO L87 Difference]: Start difference. First operand has 150 states, 106 states have (on average 3.452830188679245) internal successors, (366), 149 states have internal predecessors, (366), 0 states have call successors, (0), 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) [2022-11-26 00:28:05,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:05,235 INFO L93 Difference]: Finished difference Result 152 states and 368 transitions. [2022-11-26 00:28:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:05,240 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 [2022-11-26 00:28:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:05,257 INFO L225 Difference]: With dead ends: 152 [2022-11-26 00:28:05,257 INFO L226 Difference]: Without dead ends: 152 [2022-11-26 00:28:05,259 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 [2022-11-26 00:28:05,267 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:05,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:05,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-26 00:28:05,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2022-11-26 00:28:05,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 107 states have (on average 3.439252336448598) internal successors, (368), 149 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 368 transitions. [2022-11-26 00:28:05,348 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 368 transitions. Word has length 2 [2022-11-26 00:28:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:05,348 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 368 transitions. [2022-11-26 00:28:05,348 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) [2022-11-26 00:28:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 368 transitions. [2022-11-26 00:28:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-26 00:28:05,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:05,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-26 00:28:05,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-26 00:28:05,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:05,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:05,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:05,565 INFO L85 PathProgramCache]: Analyzing trace with hash 36198, now seen corresponding path program 1 times [2022-11-26 00:28:05,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:05,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984513516] [2022-11-26 00:28:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:05,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:05,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:05,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:05,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-26 00:28:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:05,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:28:05,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:05,718 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-26 00:28:05,719 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 [2022-11-26 00:28:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:05,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:05,740 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:05,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984513516] [2022-11-26 00:28:05,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984513516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:05,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:05,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:05,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323494427] [2022-11-26 00:28:05,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:05,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:05,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:05,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:05,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:05,744 INFO L87 Difference]: Start difference. First operand 150 states and 368 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) [2022-11-26 00:28:05,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:05,905 INFO L93 Difference]: Finished difference Result 149 states and 366 transitions. [2022-11-26 00:28:05,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:05,906 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 [2022-11-26 00:28:05,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:05,908 INFO L225 Difference]: With dead ends: 149 [2022-11-26 00:28:05,908 INFO L226 Difference]: Without dead ends: 149 [2022-11-26 00:28:05,908 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 [2022-11-26 00:28:05,910 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:05,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:05,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-26 00:28:05,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-11-26 00:28:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 107 states have (on average 3.4205607476635516) internal successors, (366), 148 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 366 transitions. [2022-11-26 00:28:05,921 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 366 transitions. Word has length 2 [2022-11-26 00:28:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:05,921 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 366 transitions. [2022-11-26 00:28:05,921 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) [2022-11-26 00:28:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 366 transitions. [2022-11-26 00:28:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-26 00:28:05,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:05,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-26 00:28:05,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-26 00:28:06,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:06,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:06,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:06,134 INFO L85 PathProgramCache]: Analyzing trace with hash 36199, now seen corresponding path program 1 times [2022-11-26 00:28:06,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:06,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616395608] [2022-11-26 00:28:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:06,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:06,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:06,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:06,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-26 00:28:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:06,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:06,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:06,255 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:06,255 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 27 [2022-11-26 00:28:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:06,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:06,281 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:06,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616395608] [2022-11-26 00:28:06,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616395608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:06,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:06,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:06,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548846353] [2022-11-26 00:28:06,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:06,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:06,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:06,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:06,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:06,283 INFO L87 Difference]: Start difference. First operand 149 states and 366 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) [2022-11-26 00:28:06,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:06,485 INFO L93 Difference]: Finished difference Result 149 states and 365 transitions. [2022-11-26 00:28:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:06,486 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 [2022-11-26 00:28:06,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:06,488 INFO L225 Difference]: With dead ends: 149 [2022-11-26 00:28:06,488 INFO L226 Difference]: Without dead ends: 149 [2022-11-26 00:28:06,488 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 [2022-11-26 00:28:06,489 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:06,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-26 00:28:06,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-11-26 00:28:06,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 107 states have (on average 3.411214953271028) internal successors, (365), 148 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 365 transitions. [2022-11-26 00:28:06,498 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 365 transitions. Word has length 2 [2022-11-26 00:28:06,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:06,499 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 365 transitions. [2022-11-26 00:28:06,499 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) [2022-11-26 00:28:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 365 transitions. [2022-11-26 00:28:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 00:28:06,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:06,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 00:28:06,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:06,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:06,726 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:06,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1126859, now seen corresponding path program 1 times [2022-11-26 00:28:06,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:06,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93194013] [2022-11-26 00:28:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:06,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:06,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:06,729 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:06,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-26 00:28:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:06,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:28:06,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:06,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:06,890 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:06,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93194013] [2022-11-26 00:28:06,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93194013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:06,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [622036740] [2022-11-26 00:28:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:06,891 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:28:06,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:28:06,900 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:28:06,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-26 00:28:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:07,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:28:07,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:07,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:07,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [622036740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:07,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710692190] [2022-11-26 00:28:07,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:07,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:07,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:07,090 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:28:07,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:28:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:07,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:28:07,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:07,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:07,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710692190] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:07,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:28:07,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 4 [2022-11-26 00:28:07,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990120331] [2022-11-26 00:28:07,209 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:28:07,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:28:07,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:28:07,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:07,210 INFO L87 Difference]: Start difference. First operand 149 states and 365 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:07,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:07,524 INFO L93 Difference]: Finished difference Result 152 states and 369 transitions. [2022-11-26 00:28:07,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:07,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-26 00:28:07,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:07,526 INFO L225 Difference]: With dead ends: 152 [2022-11-26 00:28:07,526 INFO L226 Difference]: Without dead ends: 152 [2022-11-26 00:28:07,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:07,527 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:07,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:07,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-26 00:28:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2022-11-26 00:28:07,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 3.385321100917431) internal successors, (369), 150 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 369 transitions. [2022-11-26 00:28:07,563 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 369 transitions. Word has length 3 [2022-11-26 00:28:07,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:07,564 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 369 transitions. [2022-11-26 00:28:07,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:07,564 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 369 transitions. [2022-11-26 00:28:07,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 00:28:07,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:07,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 00:28:07,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:07,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:07,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-26 00:28:08,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:08,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:08,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:08,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1126686, now seen corresponding path program 1 times [2022-11-26 00:28:08,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:08,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744864740] [2022-11-26 00:28:08,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:08,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:08,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:08,175 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:08,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-26 00:28:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:08,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-26 00:28:08,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:08,344 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:08,345 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 27 [2022-11-26 00:28:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:08,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:08,537 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:08,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744864740] [2022-11-26 00:28:08,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744864740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:08,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [816150325] [2022-11-26 00:28:08,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:08,538 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:28:08,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:28:08,541 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:28:08,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-26 00:28:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:08,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-26 00:28:08,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:08,749 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:08,749 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 27 [2022-11-26 00:28:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:08,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:08,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [816150325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:08,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644316993] [2022-11-26 00:28:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:08,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:08,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:08,823 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:28:08,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-26 00:28:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:08,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-26 00:28:08,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:08,985 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:08,986 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 27 [2022-11-26 00:28:09,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:09,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:09,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644316993] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:09,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:28:09,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 4 [2022-11-26 00:28:09,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701413445] [2022-11-26 00:28:09,039 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:28:09,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:28:09,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:09,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:28:09,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:09,040 INFO L87 Difference]: Start difference. First operand 151 states and 369 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:09,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:09,452 INFO L93 Difference]: Finished difference Result 151 states and 367 transitions. [2022-11-26 00:28:09,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:09,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-26 00:28:09,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:09,455 INFO L225 Difference]: With dead ends: 151 [2022-11-26 00:28:09,455 INFO L226 Difference]: Without dead ends: 151 [2022-11-26 00:28:09,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:09,456 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:09,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:09,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-26 00:28:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-11-26 00:28:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 3.36697247706422) internal successors, (367), 150 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 367 transitions. [2022-11-26 00:28:09,472 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 367 transitions. Word has length 3 [2022-11-26 00:28:09,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:09,473 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 367 transitions. [2022-11-26 00:28:09,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:09,473 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 367 transitions. [2022-11-26 00:28:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:28:09,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:09,476 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-26 00:28:09,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:09,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:09,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:10,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:10,078 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:10,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1082889963, now seen corresponding path program 2 times [2022-11-26 00:28:10,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:10,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885245180] [2022-11-26 00:28:10,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:10,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:10,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:10,082 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:10,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-26 00:28:10,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-26 00:28:10,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:10,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 00:28:10,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:10,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:10,239 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-26 00:28:10,240 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 2 case distinctions, treesize of input 12 treesize of output 24 [2022-11-26 00:28:10,254 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 [2022-11-26 00:28:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:10,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:10,381 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:10,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885245180] [2022-11-26 00:28:10,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885245180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:10,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:10,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:10,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327510194] [2022-11-26 00:28:10,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:10,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:10,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:10,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:10,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:10,384 INFO L87 Difference]: Start difference. First operand 151 states and 367 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:10,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:10,535 INFO L93 Difference]: Finished difference Result 125 states and 291 transitions. [2022-11-26 00:28:10,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:10,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:28:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:10,537 INFO L225 Difference]: With dead ends: 125 [2022-11-26 00:28:10,537 INFO L226 Difference]: Without dead ends: 125 [2022-11-26 00:28:10,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:10,539 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:10,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-26 00:28:10,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-11-26 00:28:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 93 states have (on average 3.129032258064516) internal successors, (291), 124 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 291 transitions. [2022-11-26 00:28:10,546 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 291 transitions. Word has length 5 [2022-11-26 00:28:10,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:10,547 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 291 transitions. [2022-11-26 00:28:10,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:10,548 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 291 transitions. [2022-11-26 00:28:10,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:28:10,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:10,548 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-26 00:28:10,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:10,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:10,764 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:10,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:10,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1082889965, now seen corresponding path program 1 times [2022-11-26 00:28:10,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:10,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736505213] [2022-11-26 00:28:10,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:10,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:10,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:10,767 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:10,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-26 00:28:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:10,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-26 00:28:10,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:10,915 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-26 00:28:10,915 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 29 [2022-11-26 00:28:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:11,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:11,000 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:11,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736505213] [2022-11-26 00:28:11,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736505213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:11,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:11,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:11,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499020549] [2022-11-26 00:28:11,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:11,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:11,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:11,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:11,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:11,003 INFO L87 Difference]: Start difference. First operand 125 states and 291 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:11,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:11,148 INFO L93 Difference]: Finished difference Result 99 states and 215 transitions. [2022-11-26 00:28:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:11,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:28:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:11,150 INFO L225 Difference]: With dead ends: 99 [2022-11-26 00:28:11,150 INFO L226 Difference]: Without dead ends: 99 [2022-11-26 00:28:11,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:11,151 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:11,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:11,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-26 00:28:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-26 00:28:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 2.792207792207792) internal successors, (215), 98 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:11,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 215 transitions. [2022-11-26 00:28:11,156 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 215 transitions. Word has length 5 [2022-11-26 00:28:11,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:11,156 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 215 transitions. [2022-11-26 00:28:11,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:11,157 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 215 transitions. [2022-11-26 00:28:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:28:11,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:11,157 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-26 00:28:11,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:11,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:11,369 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:11,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:11,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1082889790, now seen corresponding path program 2 times [2022-11-26 00:28:11,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:11,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203438025] [2022-11-26 00:28:11,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:11,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:11,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:11,375 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:11,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-26 00:28:11,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:28:11,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:11,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:11,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:11,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:11,685 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203438025] [2022-11-26 00:28:11,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203438025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [445647802] [2022-11-26 00:28:11,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:11,685 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:28:11,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:28:11,691 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:28:11,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-26 00:28:11,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:28:11,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:11,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:11,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:11,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:11,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:11,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [445647802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:11,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540688755] [2022-11-26 00:28:11,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:11,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:11,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:11,945 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:28:11,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-26 00:28:12,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:28:12,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:12,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:28:12,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:12,133 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-26 00:28:12,133 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 [2022-11-26 00:28:12,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:12,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:12,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:12,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540688755] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:12,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:28:12,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 16 [2022-11-26 00:28:12,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944071709] [2022-11-26 00:28:12,921 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:28:12,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-26 00:28:12,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:12,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-26 00:28:12,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:28:12,923 INFO L87 Difference]: Start difference. First operand 99 states and 215 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:13,231 INFO L93 Difference]: Finished difference Result 98 states and 213 transitions. [2022-11-26 00:28:13,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:28:13,232 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:28:13,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:13,233 INFO L225 Difference]: With dead ends: 98 [2022-11-26 00:28:13,233 INFO L226 Difference]: Without dead ends: 98 [2022-11-26 00:28:13,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:28:13,234 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 92 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:13,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 0 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-26 00:28:13,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-26 00:28:13,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 2.7662337662337664) internal successors, (213), 97 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 213 transitions. [2022-11-26 00:28:13,239 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 213 transitions. Word has length 5 [2022-11-26 00:28:13,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:13,240 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 213 transitions. [2022-11-26 00:28:13,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:13,240 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 213 transitions. [2022-11-26 00:28:13,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:28:13,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:13,241 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-26 00:28:13,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:13,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:13,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:13,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:13,853 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:13,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:13,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1275194984, now seen corresponding path program 1 times [2022-11-26 00:28:13,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:13,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570378525] [2022-11-26 00:28:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:13,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:13,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:13,856 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:13,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-26 00:28:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:13,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:28:13,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:14,025 INFO L321 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2022-11-26 00:28:14,025 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 [2022-11-26 00:28:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:14,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:14,056 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:14,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570378525] [2022-11-26 00:28:14,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570378525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:14,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:14,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:14,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248538603] [2022-11-26 00:28:14,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:14,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:14,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:14,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:14,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:14,058 INFO L87 Difference]: Start difference. First operand 98 states and 213 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:14,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:14,179 INFO L93 Difference]: Finished difference Result 88 states and 193 transitions. [2022-11-26 00:28:14,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:14,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:28:14,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:14,180 INFO L225 Difference]: With dead ends: 88 [2022-11-26 00:28:14,180 INFO L226 Difference]: Without dead ends: 88 [2022-11-26 00:28:14,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:14,181 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:14,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:14,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-26 00:28:14,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-26 00:28:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 73 states have (on average 2.643835616438356) internal successors, (193), 87 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:14,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 193 transitions. [2022-11-26 00:28:14,201 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 193 transitions. Word has length 7 [2022-11-26 00:28:14,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:14,201 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 193 transitions. [2022-11-26 00:28:14,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:14,201 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 193 transitions. [2022-11-26 00:28:14,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:28:14,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:14,202 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-26 00:28:14,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:14,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:14,414 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:14,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:14,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1275194985, now seen corresponding path program 1 times [2022-11-26 00:28:14,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:14,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636855902] [2022-11-26 00:28:14,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:14,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:14,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:14,416 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:14,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-26 00:28:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:14,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 00:28:14,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:14,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:14,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:14,579 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-26 00:28:14,580 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 [2022-11-26 00:28:14,587 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 [2022-11-26 00:28:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:14,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:14,629 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:14,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636855902] [2022-11-26 00:28:14,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636855902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:14,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:14,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:14,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006163902] [2022-11-26 00:28:14,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:14,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:14,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:14,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:14,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:14,631 INFO L87 Difference]: Start difference. First operand 88 states and 193 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:14,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:14,739 INFO L93 Difference]: Finished difference Result 78 states and 173 transitions. [2022-11-26 00:28:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:14,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:28:14,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:14,741 INFO L225 Difference]: With dead ends: 78 [2022-11-26 00:28:14,741 INFO L226 Difference]: Without dead ends: 78 [2022-11-26 00:28:14,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:14,742 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:14,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:14,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-26 00:28:14,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-26 00:28:14,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 2.5072463768115942) internal successors, (173), 77 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:14,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 173 transitions. [2022-11-26 00:28:14,746 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 173 transitions. Word has length 7 [2022-11-26 00:28:14,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:14,746 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 173 transitions. [2022-11-26 00:28:14,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:14,746 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 173 transitions. [2022-11-26 00:28:14,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:28:14,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:14,747 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-26 00:28:14,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-26 00:28:14,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:14,959 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:14,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:14,960 INFO L85 PathProgramCache]: Analyzing trace with hash 876338375, now seen corresponding path program 1 times [2022-11-26 00:28:14,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:14,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852919872] [2022-11-26 00:28:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:14,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:14,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:14,961 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:14,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-26 00:28:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:15,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:28:15,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:15,107 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-26 00:28:15,108 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 [2022-11-26 00:28:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:15,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:15,137 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:15,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852919872] [2022-11-26 00:28:15,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852919872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:15,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:15,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:28:15,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906821957] [2022-11-26 00:28:15,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:15,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:28:15,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:15,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:28:15,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:28:15,139 INFO L87 Difference]: Start difference. First operand 78 states and 173 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:15,254 INFO L93 Difference]: Finished difference Result 56 states and 120 transitions. [2022-11-26 00:28:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:28:15,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 00:28:15,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:15,255 INFO L225 Difference]: With dead ends: 56 [2022-11-26 00:28:15,255 INFO L226 Difference]: Without dead ends: 56 [2022-11-26 00:28:15,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:15,256 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:15,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-26 00:28:15,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-26 00:28:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 2.3076923076923075) internal successors, (120), 55 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 120 transitions. [2022-11-26 00:28:15,260 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 120 transitions. Word has length 8 [2022-11-26 00:28:15,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:15,260 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 120 transitions. [2022-11-26 00:28:15,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:15,260 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 120 transitions. [2022-11-26 00:28:15,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:28:15,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:15,261 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-26 00:28:15,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:15,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:15,472 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:15,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash 876338376, now seen corresponding path program 1 times [2022-11-26 00:28:15,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:15,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288339244] [2022-11-26 00:28:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:15,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:15,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:15,474 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:15,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-26 00:28:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:15,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:28:15,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:15,635 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:15,635 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 27 [2022-11-26 00:28:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:15,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:15,721 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:15,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288339244] [2022-11-26 00:28:15,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288339244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:15,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:15,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:28:15,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714259246] [2022-11-26 00:28:15,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:15,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:15,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:15,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:15,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:15,722 INFO L87 Difference]: Start difference. First operand 56 states and 120 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:15,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:15,980 INFO L93 Difference]: Finished difference Result 86 states and 186 transitions. [2022-11-26 00:28:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:15,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 00:28:15,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:15,982 INFO L225 Difference]: With dead ends: 86 [2022-11-26 00:28:15,982 INFO L226 Difference]: Without dead ends: 86 [2022-11-26 00:28:15,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:28:15,983 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:15,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-26 00:28:15,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2022-11-26 00:28:15,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 2.4838709677419355) internal successors, (154), 65 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 154 transitions. [2022-11-26 00:28:15,986 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 154 transitions. Word has length 8 [2022-11-26 00:28:15,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:15,986 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 154 transitions. [2022-11-26 00:28:15,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:15,987 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 154 transitions. [2022-11-26 00:28:15,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:28:15,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:15,987 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:16,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:16,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:16,195 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:16,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1396686997, now seen corresponding path program 1 times [2022-11-26 00:28:16,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:16,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962513603] [2022-11-26 00:28:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:16,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:16,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:16,198 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:16,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-26 00:28:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:16,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-26 00:28:16,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:16,384 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:16,384 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 27 [2022-11-26 00:28:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:16,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:16,775 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:16,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962513603] [2022-11-26 00:28:16,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962513603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:16,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [894795181] [2022-11-26 00:28:16,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:16,775 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:28:16,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:28:16,776 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:28:16,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-26 00:28:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:16,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-26 00:28:16,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:17,048 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:17,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-26 00:28:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:17,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:17,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [894795181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:17,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461069824] [2022-11-26 00:28:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:17,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:17,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:17,201 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:28:17,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-26 00:28:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:17,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-26 00:28:17,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:17,434 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:17,435 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 27 [2022-11-26 00:28:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:17,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:17,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461069824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:17,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:28:17,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 8 [2022-11-26 00:28:17,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604512145] [2022-11-26 00:28:17,560 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:28:17,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:28:17,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:17,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:28:17,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:28:17,561 INFO L87 Difference]: Start difference. First operand 66 states and 154 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:18,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:18,182 INFO L93 Difference]: Finished difference Result 146 states and 318 transitions. [2022-11-26 00:28:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:28:18,183 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-26 00:28:18,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:18,184 INFO L225 Difference]: With dead ends: 146 [2022-11-26 00:28:18,184 INFO L226 Difference]: Without dead ends: 146 [2022-11-26 00:28:18,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:28:18,185 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 177 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:18,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 0 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:28:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-26 00:28:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 86. [2022-11-26 00:28:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 2.707317073170732) internal successors, (222), 85 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 222 transitions. [2022-11-26 00:28:18,191 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 222 transitions. Word has length 9 [2022-11-26 00:28:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:18,191 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 222 transitions. [2022-11-26 00:28:18,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:18,192 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 222 transitions. [2022-11-26 00:28:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:28:18,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:18,193 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:18,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:18,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:18,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-26 00:28:18,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:18,795 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:18,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:18,796 INFO L85 PathProgramCache]: Analyzing trace with hash 348784871, now seen corresponding path program 1 times [2022-11-26 00:28:18,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:18,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043620671] [2022-11-26 00:28:18,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:18,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:18,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:18,798 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:18,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-26 00:28:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:18,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:28:18,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:18,963 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:18,963 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 27 [2022-11-26 00:28:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:19,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:19,051 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:19,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043620671] [2022-11-26 00:28:19,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043620671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:19,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:19,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:28:19,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346863889] [2022-11-26 00:28:19,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:19,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:19,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:19,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:19,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:19,052 INFO L87 Difference]: Start difference. First operand 86 states and 222 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:19,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:19,262 INFO L93 Difference]: Finished difference Result 120 states and 314 transitions. [2022-11-26 00:28:19,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:19,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 00:28:19,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:19,264 INFO L225 Difference]: With dead ends: 120 [2022-11-26 00:28:19,264 INFO L226 Difference]: Without dead ends: 120 [2022-11-26 00:28:19,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:28:19,265 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:19,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:19,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-26 00:28:19,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 102. [2022-11-26 00:28:19,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 2.8877551020408165) internal successors, (283), 101 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:19,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 283 transitions. [2022-11-26 00:28:19,273 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 283 transitions. Word has length 10 [2022-11-26 00:28:19,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:19,273 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 283 transitions. [2022-11-26 00:28:19,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:19,274 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 283 transitions. [2022-11-26 00:28:19,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:28:19,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:19,276 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-11-26 00:28:19,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:19,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:19,487 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:19,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:19,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2108523787, now seen corresponding path program 2 times [2022-11-26 00:28:19,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:19,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002891786] [2022-11-26 00:28:19,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:19,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:19,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:19,490 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:19,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-26 00:28:19,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:28:19,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:19,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:19,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:19,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:19,770 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:19,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002891786] [2022-11-26 00:28:19,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002891786] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:19,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1495110895] [2022-11-26 00:28:19,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:19,770 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:28:19,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:28:19,771 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:28:19,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-26 00:28:20,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:28:20,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:20,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:20,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:20,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:20,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1495110895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:20,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021920844] [2022-11-26 00:28:20,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:20,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:20,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:20,090 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:28:20,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-26 00:28:20,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:28:20,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:20,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-26 00:28:20,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:20,354 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:20,355 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 27 [2022-11-26 00:28:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:20,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:21,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021920844] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:21,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:28:21,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 5] total 19 [2022-11-26 00:28:21,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454944272] [2022-11-26 00:28:21,136 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:28:21,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-26 00:28:21,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:21,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-26 00:28:21,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:28:21,138 INFO L87 Difference]: Start difference. First operand 102 states and 283 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:22,219 INFO L93 Difference]: Finished difference Result 162 states and 369 transitions. [2022-11-26 00:28:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:28:22,220 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-26 00:28:22,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:22,221 INFO L225 Difference]: With dead ends: 162 [2022-11-26 00:28:22,221 INFO L226 Difference]: Without dead ends: 162 [2022-11-26 00:28:22,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-11-26 00:28:22,222 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 242 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:22,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 0 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:28:22,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-26 00:28:22,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 90. [2022-11-26 00:28:22,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 88 states have (on average 2.727272727272727) internal successors, (240), 89 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:22,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 240 transitions. [2022-11-26 00:28:22,228 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 240 transitions. Word has length 11 [2022-11-26 00:28:22,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:22,228 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 240 transitions. [2022-11-26 00:28:22,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 240 transitions. [2022-11-26 00:28:22,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:28:22,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:22,229 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:22,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:22,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:22,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-11-26 00:28:22,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:22,835 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:22,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:22,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2072568557, now seen corresponding path program 1 times [2022-11-26 00:28:22,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:22,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404311791] [2022-11-26 00:28:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:22,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:22,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:22,837 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:22,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-26 00:28:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:22,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-26 00:28:22,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:23,028 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:23,028 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 27 [2022-11-26 00:28:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:23,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:23,460 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:23,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404311791] [2022-11-26 00:28:23,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404311791] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:23,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1494921985] [2022-11-26 00:28:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:23,461 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:28:23,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:28:23,462 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:28:23,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-26 00:28:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:23,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-26 00:28:23,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:23,765 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:23,765 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 27 [2022-11-26 00:28:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:23,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:23,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1494921985] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:23,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785730957] [2022-11-26 00:28:23,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:23,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:23,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:23,948 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:28:23,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-26 00:28:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:24,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-26 00:28:24,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:24,145 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:24,145 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 27 [2022-11-26 00:28:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:24,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:24,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785730957] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:24,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:28:24,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 8 [2022-11-26 00:28:24,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772505782] [2022-11-26 00:28:24,306 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:28:24,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:28:24,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:24,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:28:24,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:28:24,308 INFO L87 Difference]: Start difference. First operand 90 states and 240 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:24,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:24,869 INFO L93 Difference]: Finished difference Result 166 states and 422 transitions. [2022-11-26 00:28:24,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:28:24,870 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-26 00:28:24,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:24,871 INFO L225 Difference]: With dead ends: 166 [2022-11-26 00:28:24,871 INFO L226 Difference]: Without dead ends: 166 [2022-11-26 00:28:24,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:28:24,872 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:24,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:28:24,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-26 00:28:24,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 118. [2022-11-26 00:28:24,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 116 states have (on average 2.9655172413793105) internal successors, (344), 117 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 344 transitions. [2022-11-26 00:28:24,878 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 344 transitions. Word has length 11 [2022-11-26 00:28:24,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:24,878 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 344 transitions. [2022-11-26 00:28:24,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:24,879 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 344 transitions. [2022-11-26 00:28:24,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:28:24,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:24,880 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:24,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:25,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-26 00:28:25,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:25,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:25,483 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:25,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:25,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1126516627, now seen corresponding path program 2 times [2022-11-26 00:28:25,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:25,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660507680] [2022-11-26 00:28:25,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:25,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:25,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:25,485 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:25,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-26 00:28:25,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:28:25,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:25,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:25,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:25,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:25,792 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:25,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660507680] [2022-11-26 00:28:25,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660507680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:25,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [103122010] [2022-11-26 00:28:25,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:25,793 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:28:25,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:28:25,795 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:28:25,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-26 00:28:26,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:28:26,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:26,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:26,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:26,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:26,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [103122010] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:26,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962931629] [2022-11-26 00:28:26,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:26,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:26,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:26,151 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:28:26,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-26 00:28:26,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:28:26,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:26,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-26 00:28:26,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:26,411 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-26 00:28:26,412 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 27 [2022-11-26 00:28:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:26,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:27,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962931629] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:27,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:28:27,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 5] total 19 [2022-11-26 00:28:27,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801746382] [2022-11-26 00:28:27,294 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:28:27,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-26 00:28:27,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:27,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-26 00:28:27,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:28:27,296 INFO L87 Difference]: Start difference. First operand 118 states and 344 transitions. Second operand has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:28,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:28,212 INFO L93 Difference]: Finished difference Result 152 states and 370 transitions. [2022-11-26 00:28:28,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:28:28,215 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-26 00:28:28,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:28,216 INFO L225 Difference]: With dead ends: 152 [2022-11-26 00:28:28,216 INFO L226 Difference]: Without dead ends: 152 [2022-11-26 00:28:28,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-11-26 00:28:28,217 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 185 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:28,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 0 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-26 00:28:28,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-26 00:28:28,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 104. [2022-11-26 00:28:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.8349514563106797) internal successors, (292), 103 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 292 transitions. [2022-11-26 00:28:28,223 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 292 transitions. Word has length 13 [2022-11-26 00:28:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:28,224 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 292 transitions. [2022-11-26 00:28:28,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 292 transitions. [2022-11-26 00:28:28,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-26 00:28:28,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:28,225 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:28,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:28,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-26 00:28:28,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2022-11-26 00:28:28,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-26 00:28:28,833 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:28,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:28,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1563481227, now seen corresponding path program 1 times [2022-11-26 00:28:28,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:28,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626640872] [2022-11-26 00:28:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:28,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:28,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:28,835 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:28,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-26 00:28:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:28,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 00:28:28,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:29,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:29,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:29,173 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:29,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626640872] [2022-11-26 00:28:29,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626640872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:29,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:29,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:29,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79666843] [2022-11-26 00:28:29,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:29,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:28:29,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:29,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:28:29,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:29,176 INFO L87 Difference]: Start difference. First operand 104 states and 292 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:29,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:29,587 INFO L93 Difference]: Finished difference Result 141 states and 357 transitions. [2022-11-26 00:28:29,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:29,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-26 00:28:29,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:29,589 INFO L225 Difference]: With dead ends: 141 [2022-11-26 00:28:29,589 INFO L226 Difference]: Without dead ends: 126 [2022-11-26 00:28:29,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:29,590 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:29,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:29,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-26 00:28:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 104. [2022-11-26 00:28:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.796116504854369) internal successors, (288), 103 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 288 transitions. [2022-11-26 00:28:29,595 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 288 transitions. Word has length 17 [2022-11-26 00:28:29,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:29,596 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 288 transitions. [2022-11-26 00:28:29,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:29,596 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 288 transitions. [2022-11-26 00:28:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-26 00:28:29,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:29,597 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:29,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:29,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:29,801 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:29,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:29,801 INFO L85 PathProgramCache]: Analyzing trace with hash -408706339, now seen corresponding path program 2 times [2022-11-26 00:28:29,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:29,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561297021] [2022-11-26 00:28:29,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:29,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:29,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:29,803 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:29,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-26 00:28:29,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-26 00:28:29,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:29,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 00:28:29,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:30,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:30,975 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:30,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561297021] [2022-11-26 00:28:30,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561297021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:30,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:30,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:30,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702374220] [2022-11-26 00:28:30,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:30,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:28:30,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:30,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:28:30,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:30,977 INFO L87 Difference]: Start difference. First operand 104 states and 288 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:31,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:31,998 INFO L93 Difference]: Finished difference Result 139 states and 358 transitions. [2022-11-26 00:28:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:28:31,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-26 00:28:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:32,000 INFO L225 Difference]: With dead ends: 139 [2022-11-26 00:28:32,000 INFO L226 Difference]: Without dead ends: 130 [2022-11-26 00:28:32,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:32,002 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:32,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:28:32,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-26 00:28:32,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 108. [2022-11-26 00:28:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.7850467289719627) internal successors, (298), 107 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:32,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 298 transitions. [2022-11-26 00:28:32,008 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 298 transitions. Word has length 17 [2022-11-26 00:28:32,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:32,009 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 298 transitions. [2022-11-26 00:28:32,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 298 transitions. [2022-11-26 00:28:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-26 00:28:32,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:32,011 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:32,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:32,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:32,223 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:32,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1550873333, now seen corresponding path program 3 times [2022-11-26 00:28:32,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:32,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996478493] [2022-11-26 00:28:32,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:28:32,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:32,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:32,224 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:32,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-26 00:28:32,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-26 00:28:32,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:32,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 00:28:32,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:32,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:32,559 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:32,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996478493] [2022-11-26 00:28:32,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996478493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:32,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:32,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:32,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508651537] [2022-11-26 00:28:32,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:32,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:28:32,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:32,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:28:32,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:32,562 INFO L87 Difference]: Start difference. First operand 108 states and 298 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:32,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:32,927 INFO L93 Difference]: Finished difference Result 131 states and 331 transitions. [2022-11-26 00:28:32,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:32,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-26 00:28:32,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:32,929 INFO L225 Difference]: With dead ends: 131 [2022-11-26 00:28:32,929 INFO L226 Difference]: Without dead ends: 122 [2022-11-26 00:28:32,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:32,930 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:32,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:32,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-26 00:28:32,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2022-11-26 00:28:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.7663551401869158) internal successors, (296), 107 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:32,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 296 transitions. [2022-11-26 00:28:32,939 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 296 transitions. Word has length 17 [2022-11-26 00:28:32,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:32,940 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 296 transitions. [2022-11-26 00:28:32,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 296 transitions. [2022-11-26 00:28:32,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-26 00:28:32,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:32,945 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:32,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:33,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:33,145 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:33,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:33,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1317332503, now seen corresponding path program 4 times [2022-11-26 00:28:33,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:33,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510146446] [2022-11-26 00:28:33,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:28:33,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:33,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:33,147 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:33,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-26 00:28:33,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:28:33,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:33,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 00:28:33,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:33,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:33,578 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:33,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510146446] [2022-11-26 00:28:33,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510146446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:33,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:33,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:33,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204071932] [2022-11-26 00:28:33,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:33,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:28:33,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:33,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:28:33,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:33,580 INFO L87 Difference]: Start difference. First operand 108 states and 296 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:33,979 INFO L93 Difference]: Finished difference Result 131 states and 332 transitions. [2022-11-26 00:28:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:33,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-26 00:28:33,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:33,981 INFO L225 Difference]: With dead ends: 131 [2022-11-26 00:28:33,981 INFO L226 Difference]: Without dead ends: 124 [2022-11-26 00:28:33,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:28:33,982 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:33,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:33,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-26 00:28:33,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2022-11-26 00:28:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.7117117117117115) internal successors, (301), 111 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 301 transitions. [2022-11-26 00:28:33,987 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 301 transitions. Word has length 17 [2022-11-26 00:28:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:33,988 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 301 transitions. [2022-11-26 00:28:33,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 301 transitions. [2022-11-26 00:28:33,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:28:33,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:33,989 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:34,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:34,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:34,201 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:34,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:34,201 INFO L85 PathProgramCache]: Analyzing trace with hash 845208142, now seen corresponding path program 1 times [2022-11-26 00:28:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:34,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471578424] [2022-11-26 00:28:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:34,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:34,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:34,203 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:34,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-26 00:28:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:34,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:34,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:34,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:34,569 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:34,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471578424] [2022-11-26 00:28:34,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471578424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:34,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:34,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822358303] [2022-11-26 00:28:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:34,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:34,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:34,572 INFO L87 Difference]: Start difference. First operand 112 states and 301 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:34,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:34,908 INFO L93 Difference]: Finished difference Result 130 states and 333 transitions. [2022-11-26 00:28:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:34,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-26 00:28:34,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:34,909 INFO L225 Difference]: With dead ends: 130 [2022-11-26 00:28:34,910 INFO L226 Difference]: Without dead ends: 128 [2022-11-26 00:28:34,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:34,910 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:34,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:34,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-26 00:28:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 110. [2022-11-26 00:28:34,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.7155963302752295) internal successors, (296), 109 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 296 transitions. [2022-11-26 00:28:34,915 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 296 transitions. Word has length 18 [2022-11-26 00:28:34,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:34,916 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 296 transitions. [2022-11-26 00:28:34,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:34,916 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 296 transitions. [2022-11-26 00:28:34,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:28:34,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:34,917 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:34,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:35,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:35,129 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:35,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:35,129 INFO L85 PathProgramCache]: Analyzing trace with hash -794917431, now seen corresponding path program 1 times [2022-11-26 00:28:35,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:35,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019832763] [2022-11-26 00:28:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:35,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:35,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:35,131 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:35,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-26 00:28:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:35,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:35,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:35,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:35,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:36,020 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:36,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019832763] [2022-11-26 00:28:36,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019832763] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-26 00:28:36,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:28:36,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-26 00:28:36,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593367424] [2022-11-26 00:28:36,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:36,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:36,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:36,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:36,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:36,022 INFO L87 Difference]: Start difference. First operand 110 states and 296 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:36,525 INFO L93 Difference]: Finished difference Result 136 states and 352 transitions. [2022-11-26 00:28:36,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:36,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-26 00:28:36,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:36,527 INFO L225 Difference]: With dead ends: 136 [2022-11-26 00:28:36,527 INFO L226 Difference]: Without dead ends: 136 [2022-11-26 00:28:36,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:36,528 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:36,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:36,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-26 00:28:36,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 118. [2022-11-26 00:28:36,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.717948717948718) internal successors, (318), 117 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 318 transitions. [2022-11-26 00:28:36,534 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 318 transitions. Word has length 18 [2022-11-26 00:28:36,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:36,534 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 318 transitions. [2022-11-26 00:28:36,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,534 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 318 transitions. [2022-11-26 00:28:36,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:28:36,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:36,535 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:36,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:36,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:36,747 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:36,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:36,748 INFO L85 PathProgramCache]: Analyzing trace with hash 552436604, now seen corresponding path program 2 times [2022-11-26 00:28:36,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:36,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182678708] [2022-11-26 00:28:36,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:36,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:36,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:36,749 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:36,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-26 00:28:36,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:28:36,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:36,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:36,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:37,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:37,156 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:37,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182678708] [2022-11-26 00:28:37,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182678708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:37,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:37,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:37,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575506383] [2022-11-26 00:28:37,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:37,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:37,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:37,159 INFO L87 Difference]: Start difference. First operand 118 states and 318 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:37,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:37,450 INFO L93 Difference]: Finished difference Result 146 states and 378 transitions. [2022-11-26 00:28:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:37,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-26 00:28:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:37,452 INFO L225 Difference]: With dead ends: 146 [2022-11-26 00:28:37,452 INFO L226 Difference]: Without dead ends: 146 [2022-11-26 00:28:37,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:37,453 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:37,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-26 00:28:37,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 124. [2022-11-26 00:28:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.7398373983739837) internal successors, (337), 123 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 337 transitions. [2022-11-26 00:28:37,458 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 337 transitions. Word has length 18 [2022-11-26 00:28:37,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:37,459 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 337 transitions. [2022-11-26 00:28:37,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 337 transitions. [2022-11-26 00:28:37,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:28:37,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:37,460 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:37,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:37,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:37,665 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:37,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:37,665 INFO L85 PathProgramCache]: Analyzing trace with hash 139546574, now seen corresponding path program 3 times [2022-11-26 00:28:37,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:37,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491811967] [2022-11-26 00:28:37,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:28:37,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:37,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:37,666 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:37,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-26 00:28:37,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-26 00:28:37,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:37,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:37,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:37,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:37,967 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:37,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491811967] [2022-11-26 00:28:37,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491811967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:37,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:37,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:37,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813581114] [2022-11-26 00:28:37,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:37,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:37,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:37,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:37,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:37,969 INFO L87 Difference]: Start difference. First operand 124 states and 337 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:38,280 INFO L93 Difference]: Finished difference Result 156 states and 404 transitions. [2022-11-26 00:28:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:38,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-26 00:28:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:38,283 INFO L225 Difference]: With dead ends: 156 [2022-11-26 00:28:38,283 INFO L226 Difference]: Without dead ends: 156 [2022-11-26 00:28:38,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:38,283 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:38,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-26 00:28:38,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 124. [2022-11-26 00:28:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.7398373983739837) internal successors, (337), 123 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 337 transitions. [2022-11-26 00:28:38,289 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 337 transitions. Word has length 18 [2022-11-26 00:28:38,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:38,289 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 337 transitions. [2022-11-26 00:28:38,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 337 transitions. [2022-11-26 00:28:38,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:28:38,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:38,290 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:38,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:38,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:38,491 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:38,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash 561666611, now seen corresponding path program 2 times [2022-11-26 00:28:38,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:38,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128553314] [2022-11-26 00:28:38,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:38,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:38,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:38,493 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:38,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-26 00:28:38,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:28:38,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:38,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:38,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:38,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:38,822 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:38,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128553314] [2022-11-26 00:28:38,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128553314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:38,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:38,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:38,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983377274] [2022-11-26 00:28:38,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:38,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:38,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:38,824 INFO L87 Difference]: Start difference. First operand 124 states and 337 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:39,082 INFO L93 Difference]: Finished difference Result 140 states and 358 transitions. [2022-11-26 00:28:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:39,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-26 00:28:39,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:39,084 INFO L225 Difference]: With dead ends: 140 [2022-11-26 00:28:39,084 INFO L226 Difference]: Without dead ends: 136 [2022-11-26 00:28:39,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:39,085 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:39,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:39,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-26 00:28:39,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 124. [2022-11-26 00:28:39,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.7235772357723578) internal successors, (335), 123 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:39,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 335 transitions. [2022-11-26 00:28:39,090 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 335 transitions. Word has length 18 [2022-11-26 00:28:39,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:39,091 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 335 transitions. [2022-11-26 00:28:39,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:39,091 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 335 transitions. [2022-11-26 00:28:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:28:39,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:39,092 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:39,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:39,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:39,305 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:39,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:39,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1102442557, now seen corresponding path program 3 times [2022-11-26 00:28:39,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:39,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226835247] [2022-11-26 00:28:39,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:28:39,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:39,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:39,307 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:39,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-26 00:28:39,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-26 00:28:39,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:39,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:39,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:39,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:39,970 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:39,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226835247] [2022-11-26 00:28:39,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226835247] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-26 00:28:39,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:28:39,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-26 00:28:39,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922559702] [2022-11-26 00:28:39,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:39,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:39,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:39,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:39,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:39,972 INFO L87 Difference]: Start difference. First operand 124 states and 335 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:40,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:40,568 INFO L93 Difference]: Finished difference Result 164 states and 414 transitions. [2022-11-26 00:28:40,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:40,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-26 00:28:40,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:40,570 INFO L225 Difference]: With dead ends: 164 [2022-11-26 00:28:40,570 INFO L226 Difference]: Without dead ends: 164 [2022-11-26 00:28:40,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:28:40,571 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:40,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:28:40,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-26 00:28:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 124. [2022-11-26 00:28:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.7235772357723578) internal successors, (335), 123 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 335 transitions. [2022-11-26 00:28:40,576 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 335 transitions. Word has length 18 [2022-11-26 00:28:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:40,577 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 335 transitions. [2022-11-26 00:28:40,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 335 transitions. [2022-11-26 00:28:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:28:40,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:40,577 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:40,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:40,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:40,778 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:40,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:40,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1845170704, now seen corresponding path program 4 times [2022-11-26 00:28:40,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:40,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114422649] [2022-11-26 00:28:40,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:28:40,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:40,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:40,780 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:40,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-26 00:28:40,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:28:40,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:40,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:40,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:41,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:41,135 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:41,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114422649] [2022-11-26 00:28:41,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114422649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:41,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:41,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:41,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125652187] [2022-11-26 00:28:41,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:41,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:41,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:41,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:41,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:41,137 INFO L87 Difference]: Start difference. First operand 124 states and 335 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:41,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:41,425 INFO L93 Difference]: Finished difference Result 124 states and 325 transitions. [2022-11-26 00:28:41,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:41,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-26 00:28:41,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:41,427 INFO L225 Difference]: With dead ends: 124 [2022-11-26 00:28:41,427 INFO L226 Difference]: Without dead ends: 124 [2022-11-26 00:28:41,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:41,428 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:41,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:41,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-26 00:28:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2022-11-26 00:28:41,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.6486486486486487) internal successors, (294), 111 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 294 transitions. [2022-11-26 00:28:41,433 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 294 transitions. Word has length 18 [2022-11-26 00:28:41,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:41,433 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 294 transitions. [2022-11-26 00:28:41,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:41,433 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 294 transitions. [2022-11-26 00:28:41,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:28:41,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:41,434 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:41,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-26 00:28:41,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:41,648 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:41,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:41,648 INFO L85 PathProgramCache]: Analyzing trace with hash -438490935, now seen corresponding path program 4 times [2022-11-26 00:28:41,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:41,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812826034] [2022-11-26 00:28:41,649 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:28:41,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:41,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:41,651 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:41,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-26 00:28:41,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:28:41,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:41,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:28:41,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:41,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:41,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:42,120 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:42,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812826034] [2022-11-26 00:28:42,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812826034] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-26 00:28:42,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:28:42,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-26 00:28:42,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336241031] [2022-11-26 00:28:42,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:42,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:42,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:42,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:42,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:28:42,122 INFO L87 Difference]: Start difference. First operand 112 states and 294 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:42,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:42,561 INFO L93 Difference]: Finished difference Result 118 states and 301 transitions. [2022-11-26 00:28:42,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:42,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-26 00:28:42,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:42,564 INFO L225 Difference]: With dead ends: 118 [2022-11-26 00:28:42,564 INFO L226 Difference]: Without dead ends: 118 [2022-11-26 00:28:42,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:42,565 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:42,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:42,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-26 00:28:42,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 104. [2022-11-26 00:28:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.563106796116505) internal successors, (264), 103 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 264 transitions. [2022-11-26 00:28:42,569 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 264 transitions. Word has length 18 [2022-11-26 00:28:42,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:42,570 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 264 transitions. [2022-11-26 00:28:42,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 264 transitions. [2022-11-26 00:28:42,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:28:42,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:42,571 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:42,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:42,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:42,771 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:28:42,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:42,772 INFO L85 PathProgramCache]: Analyzing trace with hash 880257622, now seen corresponding path program 1 times [2022-11-26 00:28:42,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:42,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529087835] [2022-11-26 00:28:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:42,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:42,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:42,774 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:42,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-26 00:28:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:43,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-26 00:28:43,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:45,996 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:28:45,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 524 treesize of output 194 [2022-11-26 00:28:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:28:50,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:56,194 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-26 00:28:56,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 842 treesize of output 365 [2022-11-26 00:33:43,369 WARN L233 SmtUtils]: Spent 4.62m on a formula simplification. DAG size of input: 459 DAG size of output: 105 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:34:50,479 WARN L233 SmtUtils]: Spent 1.10m on a formula simplification that was a NOOP. DAG size: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:34:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:34:50,751 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:34:50,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529087835] [2022-11-26 00:34:50,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529087835] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:34:50,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1390520865] [2022-11-26 00:34:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:50,751 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:34:50,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:34:50,753 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:34:50,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2022-11-26 00:34:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:34:51,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-26 00:34:51,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:53,364 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:34:53,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 434 treesize of output 194 [2022-11-26 00:34:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:34:53,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:34:55,998 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-26 00:34:55,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 842 treesize of output 365 [2022-11-26 00:41:06,999 WARN L233 SmtUtils]: Spent 5.96m on a formula simplification. DAG size of input: 467 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:41:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:41:08,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1390520865] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:41:08,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104158336] [2022-11-26 00:41:08,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:41:08,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:41:08,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:41:08,394 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:41:08,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02bc853-bad6-451a-a7a4-27c1f8283aff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-26 00:41:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:41:08,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-26 00:41:08,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:41:10,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:41:10,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:41:10,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:41:10,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:41:10,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:41:10,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:41:10,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:41:10,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:41:10,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:41:10,993 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:41:10,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 432 treesize of output 156 [2022-11-26 00:41:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:41:15,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:41:25,038 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-26 00:41:25,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1043 treesize of output 426