./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b 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_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e --- 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-6b4ec56 [2022-11-20 10:36:55,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:36:55,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:36:56,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:36:56,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:36:56,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:36:56,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:36:56,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:36:56,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:36:56,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:36:56,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:36:56,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:36:56,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:36:56,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:36:56,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:36:56,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:36:56,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:36:56,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:36:56,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:36:56,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:36:56,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:36:56,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:36:56,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:36:56,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:36:56,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:36:56,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:36:56,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:36:56,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:36:56,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:36:56,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:36:56,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:36:56,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:36:56,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:36:56,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:36:56,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:36:56,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:36:56,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:36:56,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:36:56,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:36:56,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:36:56,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:36:56,105 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 10:36:56,143 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:36:56,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:36:56,144 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:36:56,145 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:36:56,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:36:56,146 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:36:56,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:36:56,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:36:56,147 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:36:56,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:36:56,148 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:36:56,149 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:36:56,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:36:56,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:36:56,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:36:56,150 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:36:56,150 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:36:56,150 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:36:56,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:36:56,150 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:36:56,151 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:36:56,151 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:36:56,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:36:56,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:36:56,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:36:56,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:36:56,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:36:56,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:36:56,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:36:56,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:36:56,153 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_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2022-11-20 10:36:56,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:36:56,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:36:56,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:36:56,488 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:36:56,488 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:36:56,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2022-11-20 10:36:59,641 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:36:59,855 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:36:59,855 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2022-11-20 10:36:59,861 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/data/ffc3f9a24/fe1b39d2208b424c9f9ae6eede08a1c8/FLAG167074280 [2022-11-20 10:36:59,875 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/data/ffc3f9a24/fe1b39d2208b424c9f9ae6eede08a1c8 [2022-11-20 10:36:59,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:36:59,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:36:59,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:36:59,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:36:59,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:36:59,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:36:59" (1/1) ... [2022-11-20 10:36:59,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4379bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:59, skipping insertion in model container [2022-11-20 10:36:59,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:36:59" (1/1) ... [2022-11-20 10:36:59,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:36:59,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:37:00,135 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_1166d134-bd08-4cb3-a08e-add83f7542a0/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-11-20 10:37:00,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:37:00,160 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) [2022-11-20 10:37:00,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33542d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:00, skipping insertion in model container [2022-11-20 10:37:00,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:37:00,161 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 10:37:00,163 INFO L158 Benchmark]: Toolchain (without parser) took 283.52ms. Allocated memory is still 138.4MB. Free memory was 96.3MB in the beginning and 104.6MB in the end (delta: -8.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 10:37:00,164 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:37:00,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.07ms. Allocated memory is still 138.4MB. Free memory was 95.8MB in the beginning and 104.6MB in the end (delta: -8.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 10:37:00,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.07ms. Allocated memory is still 138.4MB. Free memory was 95.8MB in the beginning and 104.6MB in the end (delta: -8.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 96]: 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_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e --- 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-6b4ec56 [2022-11-20 10:37:02,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:37:02,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:37:02,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:37:02,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:37:02,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:37:02,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:37:02,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:37:02,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:37:02,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:37:02,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:37:02,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:37:02,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:37:02,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:37:02,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:37:02,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:37:02,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:37:02,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:37:02,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:37:02,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:37:02,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:37:02,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:37:02,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:37:02,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:37:02,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:37:02,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:37:02,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:37:02,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:37:02,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:37:02,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:37:02,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:37:02,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:37:02,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:37:02,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:37:02,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:37:02,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:37:02,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:37:02,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:37:02,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:37:02,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:37:02,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:37:02,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 10:37:02,626 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:37:02,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:37:02,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:37:02,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:37:02,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:37:02,630 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:37:02,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:37:02,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:37:02,631 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:37:02,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:37:02,632 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:37:02,633 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:37:02,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:37:02,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:37:02,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:37:02,634 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:37:02,634 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:37:02,634 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:37:02,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:37:02,635 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:37:02,635 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:37:02,635 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:37:02,635 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:37:02,635 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:37:02,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:37:02,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:37:02,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:37:02,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:37:02,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:37:02,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:37:02,637 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:37:02,638 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:37:02,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:37:02,638 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_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2022-11-20 10:37:03,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:37:03,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:37:03,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:37:03,059 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:37:03,060 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:37:03,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2022-11-20 10:37:06,372 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:37:06,648 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:37:06,649 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2022-11-20 10:37:06,656 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/data/5176da616/442d9f01b54c4b2c8457230a42077216/FLAG768668062 [2022-11-20 10:37:06,676 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/data/5176da616/442d9f01b54c4b2c8457230a42077216 [2022-11-20 10:37:06,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:37:06,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:37:06,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:37:06,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:37:06,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:37:06,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:37:06" (1/1) ... [2022-11-20 10:37:06,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465ab57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:06, skipping insertion in model container [2022-11-20 10:37:06,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:37:06" (1/1) ... [2022-11-20 10:37:06,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:37:06,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:37:06,910 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_1166d134-bd08-4cb3-a08e-add83f7542a0/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-11-20 10:37:06,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:37:06,939 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 10:37:06,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:37:06,958 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_1166d134-bd08-4cb3-a08e-add83f7542a0/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-11-20 10:37:06,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:37:06,984 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:37:07,010 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_1166d134-bd08-4cb3-a08e-add83f7542a0/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-11-20 10:37:07,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:37:07,035 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:37:07,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07 WrapperNode [2022-11-20 10:37:07,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:37:07,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:37:07,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:37:07,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:37:07,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07" (1/1) ... [2022-11-20 10:37:07,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07" (1/1) ... [2022-11-20 10:37:07,099 INFO L138 Inliner]: procedures = 28, calls = 40, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 140 [2022-11-20 10:37:07,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:37:07,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:37:07,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:37:07,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:37:07,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07" (1/1) ... [2022-11-20 10:37:07,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07" (1/1) ... [2022-11-20 10:37:07,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07" (1/1) ... [2022-11-20 10:37:07,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07" (1/1) ... [2022-11-20 10:37:07,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07" (1/1) ... [2022-11-20 10:37:07,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07" (1/1) ... [2022-11-20 10:37:07,134 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07" (1/1) ... [2022-11-20 10:37:07,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07" (1/1) ... [2022-11-20 10:37:07,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:37:07,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:37:07,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:37:07,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:37:07,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07" (1/1) ... [2022-11-20 10:37:07,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:37:07,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:07,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:37:07,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:37:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:37:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 10:37:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:37:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 10:37:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:37:07,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:37:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:37:07,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:37:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:37:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:37:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:37:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:37:07,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:37:07,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:37:07,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 10:37:07,258 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:37:07,446 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:37:07,448 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:37:07,938 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:37:08,112 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:37:08,112 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 10:37:08,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:37:08 BoogieIcfgContainer [2022-11-20 10:37:08,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:37:08,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:37:08,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:37:08,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:37:08,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:37:06" (1/3) ... [2022-11-20 10:37:08,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f89423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:37:08, skipping insertion in model container [2022-11-20 10:37:08,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07" (2/3) ... [2022-11-20 10:37:08,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f89423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:37:08, skipping insertion in model container [2022-11-20 10:37:08,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:37:08" (3/3) ... [2022-11-20 10:37:08,127 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2022-11-20 10:37:08,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:37:08,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-20 10:37:08,146 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:37:08,245 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:37:08,278 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:37:08,293 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 135 transitions, 286 flow [2022-11-20 10:37:08,296 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 135 transitions, 286 flow [2022-11-20 10:37:08,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 135 transitions, 286 flow [2022-11-20 10:37:08,360 INFO L130 PetriNetUnfolder]: 9/133 cut-off events. [2022-11-20 10:37:08,360 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:37:08,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 9/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 131 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-11-20 10:37:08,367 INFO L119 LiptonReduction]: Number of co-enabled transitions 936 [2022-11-20 10:37:26,469 INFO L134 LiptonReduction]: Checked pairs total: 1648 [2022-11-20 10:37:26,469 INFO L136 LiptonReduction]: Total number of compositions: 144 [2022-11-20 10:37:26,481 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 37 transitions, 90 flow [2022-11-20 10:37:26,512 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 202 states, 158 states have (on average 3.1835443037974684) internal successors, (503), 201 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:26,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:37:26,542 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;@328d8d18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:37:26,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-20 10:37:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 158 states have (on average 3.1835443037974684) internal successors, (503), 201 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:26,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 10:37:26,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:26,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 10:37:26,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:26,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:26,564 INFO L85 PathProgramCache]: Analyzing trace with hash 20436, now seen corresponding path program 1 times [2022-11-20 10:37:26,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:26,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777534534] [2022-11-20 10:37:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:26,578 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 [2022-11-20 10:37:26,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:26,587 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:26,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:26,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:37:26,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:26,876 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-20 10:37:26,877 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 [2022-11-20 10:37:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:26,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:26,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:26,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777534534] [2022-11-20 10:37:26,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777534534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:26,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:26,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:26,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740887127] [2022-11-20 10:37:26,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:26,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:26,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:26,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:26,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:26,972 INFO L87 Difference]: Start difference. First operand has 202 states, 158 states have (on average 3.1835443037974684) internal successors, (503), 201 states have internal predecessors, (503), 0 states have call successors, (0), 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) [2022-11-20 10:37:27,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:27,205 INFO L93 Difference]: Finished difference Result 200 states and 501 transitions. [2022-11-20 10:37:27,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:27,207 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 [2022-11-20 10:37:27,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:27,223 INFO L225 Difference]: With dead ends: 200 [2022-11-20 10:37:27,223 INFO L226 Difference]: Without dead ends: 200 [2022-11-20 10:37:27,224 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 [2022-11-20 10:37:27,229 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2 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 [2022-11-20 10:37:27,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:37:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-20 10:37:27,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-11-20 10:37:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 3.170886075949367) internal successors, (501), 199 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:27,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 501 transitions. [2022-11-20 10:37:27,306 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 501 transitions. Word has length 2 [2022-11-20 10:37:27,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:27,311 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 501 transitions. [2022-11-20 10:37:27,311 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) [2022-11-20 10:37:27,312 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 501 transitions. [2022-11-20 10:37:27,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 10:37:27,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:27,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 10:37:27,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:27,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:27,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:27,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:27,527 INFO L85 PathProgramCache]: Analyzing trace with hash 20564, now seen corresponding path program 1 times [2022-11-20 10:37:27,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:27,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842888472] [2022-11-20 10:37:27,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:27,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:27,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:27,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:27,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:27,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:37:27,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:27,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:27,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:27,709 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 10:37:27,710 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 [2022-11-20 10:37:27,727 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 [2022-11-20 10:37:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:27,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:27,770 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:27,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842888472] [2022-11-20 10:37:27,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842888472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:27,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:27,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:27,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266341915] [2022-11-20 10:37:27,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:27,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:27,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:27,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:27,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:27,773 INFO L87 Difference]: Start difference. First operand 200 states and 501 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) [2022-11-20 10:37:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:27,895 INFO L93 Difference]: Finished difference Result 201 states and 505 transitions. [2022-11-20 10:37:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:27,895 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 [2022-11-20 10:37:27,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:27,897 INFO L225 Difference]: With dead ends: 201 [2022-11-20 10:37:27,897 INFO L226 Difference]: Without dead ends: 201 [2022-11-20 10:37:27,898 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 [2022-11-20 10:37:27,899 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:27,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2022-11-20 10:37:27,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-20 10:37:27,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-11-20 10:37:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 159 states have (on average 3.1761006289308176) internal successors, (505), 200 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:27,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 505 transitions. [2022-11-20 10:37:27,913 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 505 transitions. Word has length 2 [2022-11-20 10:37:27,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:27,913 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 505 transitions. [2022-11-20 10:37:27,913 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) [2022-11-20 10:37:27,914 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 505 transitions. [2022-11-20 10:37:27,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 10:37:27,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:27,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 10:37:27,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:28,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:28,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:28,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:28,126 INFO L85 PathProgramCache]: Analyzing trace with hash 20565, now seen corresponding path program 1 times [2022-11-20 10:37:28,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:28,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142999349] [2022-11-20 10:37:28,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:28,127 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 [2022-11-20 10:37:28,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:28,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:28,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:28,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:37:28,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:28,258 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-20 10:37:28,258 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 [2022-11-20 10:37:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:28,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:28,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:28,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142999349] [2022-11-20 10:37:28,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142999349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:28,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:28,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:28,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174466168] [2022-11-20 10:37:28,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:28,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:28,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:28,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:28,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:28,296 INFO L87 Difference]: Start difference. First operand 201 states and 505 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) [2022-11-20 10:37:28,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:28,438 INFO L93 Difference]: Finished difference Result 201 states and 504 transitions. [2022-11-20 10:37:28,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:28,439 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 [2022-11-20 10:37:28,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:28,441 INFO L225 Difference]: With dead ends: 201 [2022-11-20 10:37:28,441 INFO L226 Difference]: Without dead ends: 201 [2022-11-20 10:37:28,441 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 [2022-11-20 10:37:28,442 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:28,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2022-11-20 10:37:28,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-20 10:37:28,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-11-20 10:37:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 159 states have (on average 3.169811320754717) internal successors, (504), 200 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 504 transitions. [2022-11-20 10:37:28,471 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 504 transitions. Word has length 2 [2022-11-20 10:37:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:28,471 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 504 transitions. [2022-11-20 10:37:28,471 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) [2022-11-20 10:37:28,472 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 504 transitions. [2022-11-20 10:37:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 10:37:28,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:28,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 10:37:28,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:28,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:28,684 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:28,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:28,685 INFO L85 PathProgramCache]: Analyzing trace with hash 20437, now seen corresponding path program 1 times [2022-11-20 10:37:28,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:28,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411853638] [2022-11-20 10:37:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:28,685 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 [2022-11-20 10:37:28,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:28,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:28,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:28,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:37:28,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:28,849 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:37:28,850 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 [2022-11-20 10:37:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:28,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:28,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:28,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411853638] [2022-11-20 10:37:28,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411853638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:28,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:28,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:28,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242160446] [2022-11-20 10:37:28,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:28,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:28,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:28,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:28,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:28,886 INFO L87 Difference]: Start difference. First operand 201 states and 504 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) [2022-11-20 10:37:29,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:29,165 INFO L93 Difference]: Finished difference Result 396 states and 998 transitions. [2022-11-20 10:37:29,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:29,165 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 [2022-11-20 10:37:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:29,168 INFO L225 Difference]: With dead ends: 396 [2022-11-20 10:37:29,168 INFO L226 Difference]: Without dead ends: 396 [2022-11-20 10:37:29,169 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 [2022-11-20 10:37:29,170 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:29,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 4 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:37:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-11-20 10:37:29,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 201. [2022-11-20 10:37:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 159 states have (on average 3.1635220125786163) internal successors, (503), 200 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 503 transitions. [2022-11-20 10:37:29,183 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 503 transitions. Word has length 2 [2022-11-20 10:37:29,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:29,184 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 503 transitions. [2022-11-20 10:37:29,184 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) [2022-11-20 10:37:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 503 transitions. [2022-11-20 10:37:29,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 10:37:29,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:29,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 10:37:29,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:29,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:29,396 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:29,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:29,396 INFO L85 PathProgramCache]: Analyzing trace with hash 637340, now seen corresponding path program 1 times [2022-11-20 10:37:29,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:29,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987050191] [2022-11-20 10:37:29,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:29,397 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 [2022-11-20 10:37:29,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:29,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:29,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 10:37:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:29,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:37:29,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:29,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:29,580 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-20 10:37:29,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2022-11-20 10:37:29,593 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 [2022-11-20 10:37:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:29,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:29,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:29,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987050191] [2022-11-20 10:37:29,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987050191] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:29,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:37:29,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-20 10:37:29,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955773150] [2022-11-20 10:37:29,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:29,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:37:29,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:29,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:37:29,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:37:29,972 INFO L87 Difference]: Start difference. First operand 201 states and 503 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) [2022-11-20 10:37:30,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:30,440 INFO L93 Difference]: Finished difference Result 203 states and 511 transitions. [2022-11-20 10:37:30,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:37:30,441 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 [2022-11-20 10:37:30,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:30,442 INFO L225 Difference]: With dead ends: 203 [2022-11-20 10:37:30,442 INFO L226 Difference]: Without dead ends: 203 [2022-11-20 10:37:30,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:37:30,444 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:30,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 14 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 43 Unchecked, 0.5s Time] [2022-11-20 10:37:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-20 10:37:30,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-11-20 10:37:30,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 161 states have (on average 3.1739130434782608) internal successors, (511), 202 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:30,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 511 transitions. [2022-11-20 10:37:30,454 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 511 transitions. Word has length 3 [2022-11-20 10:37:30,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:30,455 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 511 transitions. [2022-11-20 10:37:30,455 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) [2022-11-20 10:37:30,455 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 511 transitions. [2022-11-20 10:37:30,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 10:37:30,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:30,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 10:37:30,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:30,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:30,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:30,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:30,667 INFO L85 PathProgramCache]: Analyzing trace with hash 637341, now seen corresponding path program 1 times [2022-11-20 10:37:30,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:30,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727746873] [2022-11-20 10:37:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:30,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:30,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:30,670 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:30,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 10:37:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:30,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:37:30,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:30,811 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-20 10:37:30,811 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 [2022-11-20 10:37:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:37:30,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:30,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:30,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727746873] [2022-11-20 10:37:30,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727746873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:30,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:30,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:30,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672102355] [2022-11-20 10:37:30,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:30,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:30,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:30,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:30,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:30,866 INFO L87 Difference]: Start difference. First operand 203 states and 511 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) [2022-11-20 10:37:30,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:30,958 INFO L93 Difference]: Finished difference Result 202 states and 508 transitions. [2022-11-20 10:37:30,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:30,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 10:37:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:30,960 INFO L225 Difference]: With dead ends: 202 [2022-11-20 10:37:30,960 INFO L226 Difference]: Without dead ends: 202 [2022-11-20 10:37:30,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:30,962 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:30,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-11-20 10:37:30,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-20 10:37:30,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-11-20 10:37:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 3.1552795031055902) internal successors, (508), 201 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:30,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 508 transitions. [2022-11-20 10:37:30,971 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 508 transitions. Word has length 3 [2022-11-20 10:37:30,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:30,971 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 508 transitions. [2022-11-20 10:37:30,972 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) [2022-11-20 10:37:30,972 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 508 transitions. [2022-11-20 10:37:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 10:37:30,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:30,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 10:37:30,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:31,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:31,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:31,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:31,184 INFO L85 PathProgramCache]: Analyzing trace with hash 637213, now seen corresponding path program 1 times [2022-11-20 10:37:31,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:31,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070378864] [2022-11-20 10:37:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:31,185 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 [2022-11-20 10:37:31,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:31,186 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:31,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:31,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:37:31,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:31,331 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:37:31,331 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 [2022-11-20 10:37:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:31,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:31,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:31,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070378864] [2022-11-20 10:37:31,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070378864] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:31,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:37:31,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-20 10:37:31,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847947325] [2022-11-20 10:37:31,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:31,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:37:31,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:37:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:37:31,668 INFO L87 Difference]: Start difference. First operand 202 states and 508 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) [2022-11-20 10:37:32,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:32,265 INFO L93 Difference]: Finished difference Result 593 states and 1499 transitions. [2022-11-20 10:37:32,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:37:32,265 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 [2022-11-20 10:37:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:32,269 INFO L225 Difference]: With dead ends: 593 [2022-11-20 10:37:32,269 INFO L226 Difference]: Without dead ends: 593 [2022-11-20 10:37:32,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:32,270 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 110 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:32,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 8 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:37:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-11-20 10:37:32,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 203. [2022-11-20 10:37:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 162 states have (on average 3.1419753086419755) internal successors, (509), 202 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:32,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 509 transitions. [2022-11-20 10:37:32,282 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 509 transitions. Word has length 3 [2022-11-20 10:37:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:32,282 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 509 transitions. [2022-11-20 10:37:32,282 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) [2022-11-20 10:37:32,282 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 509 transitions. [2022-11-20 10:37:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 10:37:32,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:32,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 10:37:32,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-20 10:37:32,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:32,500 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:32,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:32,500 INFO L85 PathProgramCache]: Analyzing trace with hash 19776105, now seen corresponding path program 1 times [2022-11-20 10:37:32,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:32,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815352626] [2022-11-20 10:37:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:32,500 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 [2022-11-20 10:37:32,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:32,502 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:32,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 10:37:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:32,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:37:32,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:32,626 INFO L321 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2022-11-20 10:37:32,626 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 [2022-11-20 10:37:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:32,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:32,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:32,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815352626] [2022-11-20 10:37:32,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815352626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:32,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:32,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:32,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531264426] [2022-11-20 10:37:32,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:32,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:32,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:32,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:32,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:32,650 INFO L87 Difference]: Start difference. First operand 203 states and 509 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:32,767 INFO L93 Difference]: Finished difference Result 191 states and 485 transitions. [2022-11-20 10:37:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:32,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 10:37:32,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:32,770 INFO L225 Difference]: With dead ends: 191 [2022-11-20 10:37:32,770 INFO L226 Difference]: Without dead ends: 191 [2022-11-20 10:37:32,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:32,771 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:32,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:32,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-20 10:37:32,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2022-11-20 10:37:32,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 156 states have (on average 3.108974358974359) internal successors, (485), 190 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:32,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 485 transitions. [2022-11-20 10:37:32,778 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 485 transitions. Word has length 4 [2022-11-20 10:37:32,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:32,778 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 485 transitions. [2022-11-20 10:37:32,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:32,779 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 485 transitions. [2022-11-20 10:37:32,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 10:37:32,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:32,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 10:37:32,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:32,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:32,980 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:32,980 INFO L85 PathProgramCache]: Analyzing trace with hash 19776106, now seen corresponding path program 1 times [2022-11-20 10:37:32,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:32,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922523009] [2022-11-20 10:37:32,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:32,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:32,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:32,982 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:32,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 10:37:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:33,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:37:33,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:33,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:33,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:33,112 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 10:37:33,113 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 [2022-11-20 10:37:33,120 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 [2022-11-20 10:37:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:33,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:33,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:33,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922523009] [2022-11-20 10:37:33,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922523009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:33,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:33,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:33,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894366833] [2022-11-20 10:37:33,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:33,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:33,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:33,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:33,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:33,147 INFO L87 Difference]: Start difference. First operand 191 states and 485 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:33,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:33,265 INFO L93 Difference]: Finished difference Result 179 states and 461 transitions. [2022-11-20 10:37:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:33,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 10:37:33,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:33,267 INFO L225 Difference]: With dead ends: 179 [2022-11-20 10:37:33,267 INFO L226 Difference]: Without dead ends: 179 [2022-11-20 10:37:33,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:33,268 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:33,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:33,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-20 10:37:33,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-20 10:37:33,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 150 states have (on average 3.0733333333333333) internal successors, (461), 178 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 461 transitions. [2022-11-20 10:37:33,275 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 461 transitions. Word has length 4 [2022-11-20 10:37:33,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:33,275 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 461 transitions. [2022-11-20 10:37:33,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:33,275 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 461 transitions. [2022-11-20 10:37:33,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:37:33,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:33,276 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-20 10:37:33,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:33,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:33,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:33,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:33,477 INFO L85 PathProgramCache]: Analyzing trace with hash 612479132, now seen corresponding path program 2 times [2022-11-20 10:37:33,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:33,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623668716] [2022-11-20 10:37:33,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:37:33,477 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 [2022-11-20 10:37:33,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:33,478 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:33,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:33,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:37:33,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:37:33,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:37:33,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:33,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:33,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:33,620 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 10:37:33,620 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 [2022-11-20 10:37:33,634 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 [2022-11-20 10:37:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:37:33,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:33,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:33,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623668716] [2022-11-20 10:37:33,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623668716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:33,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:33,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492518101] [2022-11-20 10:37:33,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:33,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:33,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:33,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:33,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:33,713 INFO L87 Difference]: Start difference. First operand 179 states and 461 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) [2022-11-20 10:37:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:33,788 INFO L93 Difference]: Finished difference Result 178 states and 459 transitions. [2022-11-20 10:37:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:33,789 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 [2022-11-20 10:37:33,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:33,790 INFO L225 Difference]: With dead ends: 178 [2022-11-20 10:37:33,790 INFO L226 Difference]: Without dead ends: 178 [2022-11-20 10:37:33,790 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 [2022-11-20 10:37:33,791 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:33,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-20 10:37:33,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-20 10:37:33,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-11-20 10:37:33,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 150 states have (on average 3.06) internal successors, (459), 177 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 459 transitions. [2022-11-20 10:37:33,798 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 459 transitions. Word has length 5 [2022-11-20 10:37:33,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:33,798 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 459 transitions. [2022-11-20 10:37:33,798 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) [2022-11-20 10:37:33,798 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 459 transitions. [2022-11-20 10:37:33,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:37:33,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:33,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:37:33,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:33,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:33,999 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:34,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:34,000 INFO L85 PathProgramCache]: Analyzing trace with hash 613055227, now seen corresponding path program 1 times [2022-11-20 10:37:34,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:34,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144725020] [2022-11-20 10:37:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:34,000 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 [2022-11-20 10:37:34,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:34,001 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:34,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:34,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:37:34,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:34,122 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-20 10:37:34,122 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 [2022-11-20 10:37:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:34,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:34,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:34,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144725020] [2022-11-20 10:37:34,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144725020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:34,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:34,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:37:34,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133608430] [2022-11-20 10:37:34,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:34,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:37:34,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:34,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:37:34,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:37:34,152 INFO L87 Difference]: Start difference. First operand 178 states and 459 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:34,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:34,275 INFO L93 Difference]: Finished difference Result 130 states and 330 transitions. [2022-11-20 10:37:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:37:34,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:37:34,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:34,277 INFO L225 Difference]: With dead ends: 130 [2022-11-20 10:37:34,277 INFO L226 Difference]: Without dead ends: 130 [2022-11-20 10:37:34,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:34,278 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:34,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:34,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-20 10:37:34,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-20 10:37:34,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 117 states have (on average 2.8205128205128207) internal successors, (330), 129 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:34,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 330 transitions. [2022-11-20 10:37:34,283 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 330 transitions. Word has length 5 [2022-11-20 10:37:34,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:34,283 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 330 transitions. [2022-11-20 10:37:34,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:34,283 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 330 transitions. [2022-11-20 10:37:34,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:37:34,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:34,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:37:34,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:34,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:34,485 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:34,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:34,485 INFO L85 PathProgramCache]: Analyzing trace with hash 613055228, now seen corresponding path program 1 times [2022-11-20 10:37:34,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:34,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237863333] [2022-11-20 10:37:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:34,485 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 [2022-11-20 10:37:34,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:34,487 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:34,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:34,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:37:34,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:34,632 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:37:34,632 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 [2022-11-20 10:37:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:34,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:34,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:34,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237863333] [2022-11-20 10:37:34,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237863333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:34,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:34,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:37:34,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59415480] [2022-11-20 10:37:34,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:34,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:34,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:34,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:34,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:34,727 INFO L87 Difference]: Start difference. First operand 130 states and 330 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2022-11-20 10:37:35,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:35,028 INFO L93 Difference]: Finished difference Result 208 states and 529 transitions. [2022-11-20 10:37:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:37:35,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:37:35,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:35,030 INFO L225 Difference]: With dead ends: 208 [2022-11-20 10:37:35,030 INFO L226 Difference]: Without dead ends: 208 [2022-11-20 10:37:35,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:35,031 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 66 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:35,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 4 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:37:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-20 10:37:35,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 152. [2022-11-20 10:37:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 139 states have (on average 2.9568345323741005) internal successors, (411), 151 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 411 transitions. [2022-11-20 10:37:35,038 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 411 transitions. Word has length 5 [2022-11-20 10:37:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:35,038 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 411 transitions. [2022-11-20 10:37:35,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2022-11-20 10:37:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 411 transitions. [2022-11-20 10:37:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:37:35,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:35,039 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-20 10:37:35,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:35,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:35,240 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:35,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1806983637, now seen corresponding path program 2 times [2022-11-20 10:37:35,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:35,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810099375] [2022-11-20 10:37:35,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:37:35,240 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 [2022-11-20 10:37:35,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:35,241 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:35,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 10:37:35,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:37:35,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:37:35,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:37:35,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:35,412 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:37:35,412 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 14 treesize of output 29 [2022-11-20 10:37:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:35,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:36,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:36,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810099375] [2022-11-20 10:37:36,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810099375] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:36,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:37:36,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 10:37:36,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709133213] [2022-11-20 10:37:36,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:36,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:37:36,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:36,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:37:36,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:37:36,489 INFO L87 Difference]: Start difference. First operand 152 states and 411 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:40,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:40,771 INFO L93 Difference]: Finished difference Result 1463 states and 4014 transitions. [2022-11-20 10:37:40,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:37:40,773 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 10:37:40,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:40,781 INFO L225 Difference]: With dead ends: 1463 [2022-11-20 10:37:40,781 INFO L226 Difference]: Without dead ends: 1463 [2022-11-20 10:37:40,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:37:40,782 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 588 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:40,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 58 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 10:37:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-11-20 10:37:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 158. [2022-11-20 10:37:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 145 states have (on average 2.9172413793103447) internal successors, (423), 157 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:40,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 423 transitions. [2022-11-20 10:37:40,801 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 423 transitions. Word has length 6 [2022-11-20 10:37:40,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:40,802 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 423 transitions. [2022-11-20 10:37:40,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:40,802 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 423 transitions. [2022-11-20 10:37:40,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:37:40,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:40,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:37:40,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:41,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:41,020 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:41,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:41,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1824984602, now seen corresponding path program 1 times [2022-11-20 10:37:41,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:41,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346911527] [2022-11-20 10:37:41,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:41,021 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 [2022-11-20 10:37:41,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:41,023 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:41,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 10:37:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:41,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:37:41,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:41,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:41,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:41,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346911527] [2022-11-20 10:37:41,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346911527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:41,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:41,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:37:41,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224292485] [2022-11-20 10:37:41,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:41,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:41,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:41,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:41,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:41,119 INFO L87 Difference]: Start difference. First operand 158 states and 423 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2022-11-20 10:37:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:41,225 INFO L93 Difference]: Finished difference Result 128 states and 328 transitions. [2022-11-20 10:37:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:41,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 10:37:41,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:41,227 INFO L225 Difference]: With dead ends: 128 [2022-11-20 10:37:41,227 INFO L226 Difference]: Without dead ends: 128 [2022-11-20 10:37:41,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:41,228 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2 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 [2022-11-20 10:37:41,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:41,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-20 10:37:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-11-20 10:37:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 119 states have (on average 2.7563025210084033) internal successors, (328), 127 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 328 transitions. [2022-11-20 10:37:41,234 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 328 transitions. Word has length 6 [2022-11-20 10:37:41,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:41,234 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 328 transitions. [2022-11-20 10:37:41,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2022-11-20 10:37:41,235 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 328 transitions. [2022-11-20 10:37:41,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:37:41,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:41,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:37:41,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:41,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:41,447 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:41,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:41,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1824984601, now seen corresponding path program 1 times [2022-11-20 10:37:41,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:41,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889766659] [2022-11-20 10:37:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:41,448 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 [2022-11-20 10:37:41,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:41,449 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:41,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:41,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:37:41,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:41,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:41,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:41,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:41,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889766659] [2022-11-20 10:37:41,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889766659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:41,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:41,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:37:41,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421633282] [2022-11-20 10:37:41,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:41,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:37:41,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:41,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:37:41,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:37:41,580 INFO L87 Difference]: Start difference. First operand 128 states and 328 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) [2022-11-20 10:37:41,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:41,686 INFO L93 Difference]: Finished difference Result 98 states and 233 transitions. [2022-11-20 10:37:41,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:41,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 10:37:41,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:41,691 INFO L225 Difference]: With dead ends: 98 [2022-11-20 10:37:41,691 INFO L226 Difference]: Without dead ends: 98 [2022-11-20 10:37:41,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:37:41,694 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:41,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:41,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-20 10:37:41,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-20 10:37:41,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 2.5053763440860215) internal successors, (233), 97 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:41,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 233 transitions. [2022-11-20 10:37:41,699 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 233 transitions. Word has length 6 [2022-11-20 10:37:41,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:41,700 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 233 transitions. [2022-11-20 10:37:41,700 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) [2022-11-20 10:37:41,700 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 233 transitions. [2022-11-20 10:37:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 10:37:41,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:41,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:41,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:41,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:41,907 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:41,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:41,907 INFO L85 PathProgramCache]: Analyzing trace with hash 735574089, now seen corresponding path program 1 times [2022-11-20 10:37:41,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:41,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672144382] [2022-11-20 10:37:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:41,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:41,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:41,909 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:41,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:42,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:37:42,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:42,085 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:37:42,085 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 [2022-11-20 10:37:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:42,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:42,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:42,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672144382] [2022-11-20 10:37:42,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672144382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:42,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:42,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:37:42,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434803998] [2022-11-20 10:37:42,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:42,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:42,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:42,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:42,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:42,215 INFO L87 Difference]: Start difference. First operand 98 states and 233 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:42,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:42,379 INFO L93 Difference]: Finished difference Result 101 states and 238 transitions. [2022-11-20 10:37:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:37:42,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 10:37:42,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:42,381 INFO L225 Difference]: With dead ends: 101 [2022-11-20 10:37:42,381 INFO L226 Difference]: Without dead ends: 101 [2022-11-20 10:37:42,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:37:42,382 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:42,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-11-20 10:37:42,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-20 10:37:42,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-20 10:37:42,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 2.4791666666666665) internal successors, (238), 100 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 238 transitions. [2022-11-20 10:37:42,386 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 238 transitions. Word has length 7 [2022-11-20 10:37:42,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:42,386 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 238 transitions. [2022-11-20 10:37:42,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:42,386 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 238 transitions. [2022-11-20 10:37:42,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 10:37:42,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:42,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:42,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:42,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:42,599 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:42,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:42,600 INFO L85 PathProgramCache]: Analyzing trace with hash 739945429, now seen corresponding path program 1 times [2022-11-20 10:37:42,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:42,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755443735] [2022-11-20 10:37:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:42,601 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 [2022-11-20 10:37:42,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:42,602 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:42,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:42,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:37:42,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:42,775 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:37:42,775 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 [2022-11-20 10:37:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:42,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:42,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:42,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755443735] [2022-11-20 10:37:42,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755443735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:42,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:42,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:37:42,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385751925] [2022-11-20 10:37:42,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:42,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:42,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:42,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:42,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:42,891 INFO L87 Difference]: Start difference. First operand 101 states and 238 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:43,168 INFO L93 Difference]: Finished difference Result 145 states and 348 transitions. [2022-11-20 10:37:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:37:43,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 10:37:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:43,169 INFO L225 Difference]: With dead ends: 145 [2022-11-20 10:37:43,169 INFO L226 Difference]: Without dead ends: 145 [2022-11-20 10:37:43,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:43,170 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 54 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:43,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:37:43,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-20 10:37:43,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 115. [2022-11-20 10:37:43,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 2.618181818181818) internal successors, (288), 114 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) [2022-11-20 10:37:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions. [2022-11-20 10:37:43,175 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 7 [2022-11-20 10:37:43,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:43,175 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 288 transitions. [2022-11-20 10:37:43,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:43,176 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions. [2022-11-20 10:37:43,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:37:43,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:43,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:43,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:43,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:43,377 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:43,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:43,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1898257409, now seen corresponding path program 1 times [2022-11-20 10:37:43,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:43,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346404531] [2022-11-20 10:37:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:43,378 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 [2022-11-20 10:37:43,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:43,380 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:43,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:43,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:37:43,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:43,572 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:37:43,573 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 [2022-11-20 10:37:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:37:43,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:44,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:37:44,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:44,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346404531] [2022-11-20 10:37:44,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346404531] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:44,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:37:44,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 10:37:44,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572709794] [2022-11-20 10:37:44,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:44,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:37:44,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:44,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:37:44,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:37:44,393 INFO L87 Difference]: Start difference. First operand 115 states and 288 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:46,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:46,245 INFO L93 Difference]: Finished difference Result 309 states and 746 transitions. [2022-11-20 10:37:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:37:46,246 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 10:37:46,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:46,251 INFO L225 Difference]: With dead ends: 309 [2022-11-20 10:37:46,251 INFO L226 Difference]: Without dead ends: 309 [2022-11-20 10:37:46,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:37:46,252 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 247 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:46,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 14 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 10:37:46,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-20 10:37:46,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 207. [2022-11-20 10:37:46,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 202 states have (on average 2.801980198019802) internal successors, (566), 206 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 566 transitions. [2022-11-20 10:37:46,265 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 566 transitions. Word has length 8 [2022-11-20 10:37:46,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:46,265 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 566 transitions. [2022-11-20 10:37:46,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:46,265 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 566 transitions. [2022-11-20 10:37:46,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 10:37:46,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:46,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:46,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 10:37:46,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:46,484 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:46,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1876994831, now seen corresponding path program 1 times [2022-11-20 10:37:46,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:46,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24938466] [2022-11-20 10:37:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:46,485 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 [2022-11-20 10:37:46,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:46,486 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:46,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:37:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:46,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:37:46,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:46,673 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:37:46,674 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 [2022-11-20 10:37:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:46,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:46,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:46,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24938466] [2022-11-20 10:37:46,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24938466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:46,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:46,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:37:46,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965899215] [2022-11-20 10:37:46,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:46,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:46,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:46,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:46,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:46,831 INFO L87 Difference]: Start difference. First operand 207 states and 566 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:47,003 INFO L93 Difference]: Finished difference Result 213 states and 585 transitions. [2022-11-20 10:37:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:37:47,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 10:37:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:47,004 INFO L225 Difference]: With dead ends: 213 [2022-11-20 10:37:47,005 INFO L226 Difference]: Without dead ends: 213 [2022-11-20 10:37:47,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:37:47,005 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:47,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-11-20 10:37:47,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-20 10:37:47,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-11-20 10:37:47,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 208 states have (on average 2.8125) internal successors, (585), 212 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:47,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 585 transitions. [2022-11-20 10:37:47,012 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 585 transitions. Word has length 9 [2022-11-20 10:37:47,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:47,013 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 585 transitions. [2022-11-20 10:37:47,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:47,013 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 585 transitions. [2022-11-20 10:37:47,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:37:47,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:47,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:47,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:47,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:47,214 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:47,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:47,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1229821271, now seen corresponding path program 1 times [2022-11-20 10:37:47,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:47,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705404593] [2022-11-20 10:37:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:47,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:47,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:47,217 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:47,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 10:37:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:47,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:37:47,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:47,399 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:37:47,399 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 [2022-11-20 10:37:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:37:47,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:37:48,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:48,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705404593] [2022-11-20 10:37:48,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705404593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:48,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:37:48,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 10:37:48,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627096076] [2022-11-20 10:37:48,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:48,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:37:48,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:48,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:37:48,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:37:48,251 INFO L87 Difference]: Start difference. First operand 213 states and 585 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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) [2022-11-20 10:37:50,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:50,108 INFO L93 Difference]: Finished difference Result 515 states and 1381 transitions. [2022-11-20 10:37:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:37:50,110 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 10:37:50,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:50,112 INFO L225 Difference]: With dead ends: 515 [2022-11-20 10:37:50,113 INFO L226 Difference]: Without dead ends: 515 [2022-11-20 10:37:50,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:37:50,114 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 195 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:50,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 17 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 10:37:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-11-20 10:37:50,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 403. [2022-11-20 10:37:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 398 states have (on average 2.992462311557789) internal successors, (1191), 402 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:50,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1191 transitions. [2022-11-20 10:37:50,129 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1191 transitions. Word has length 10 [2022-11-20 10:37:50,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:50,129 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 1191 transitions. [2022-11-20 10:37:50,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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) [2022-11-20 10:37:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1191 transitions. [2022-11-20 10:37:50,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 10:37:50,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:50,131 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-20 10:37:50,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:50,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:50,343 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:37:50,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:50,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1426300117, now seen corresponding path program 3 times [2022-11-20 10:37:50,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:50,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397197185] [2022-11-20 10:37:50,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:37:50,344 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 [2022-11-20 10:37:50,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:50,345 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:37:50,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 10:37:50,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-20 10:37:50,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:37:50,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:37:50,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:50,619 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:37:50,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 10:37:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:51,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:54,141 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:54,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:54,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397197185] [2022-11-20 10:37:54,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397197185] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:54,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:37:54,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-20 10:37:54,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088896273] [2022-11-20 10:37:54,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:54,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:37:54,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:54,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:37:54,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:37:54,143 INFO L87 Difference]: Start difference. First operand 403 states and 1191 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:16,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:16,560 INFO L93 Difference]: Finished difference Result 8370 states and 25065 transitions. [2022-11-20 10:38:16,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:38:16,562 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 10:38:16,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:16,603 INFO L225 Difference]: With dead ends: 8370 [2022-11-20 10:38:16,603 INFO L226 Difference]: Without dead ends: 8370 [2022-11-20 10:38:16,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:38:16,604 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2603 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2603 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:16,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2603 Valid, 262 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-20 10:38:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2022-11-20 10:38:16,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 415. [2022-11-20 10:38:16,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 410 states have (on average 2.9634146341463414) internal successors, (1215), 414 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 1215 transitions. [2022-11-20 10:38:16,719 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 1215 transitions. Word has length 12 [2022-11-20 10:38:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:16,719 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 1215 transitions. [2022-11-20 10:38:16,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 1215 transitions. [2022-11-20 10:38:16,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:38:16,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:16,721 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2022-11-20 10:38:16,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:16,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:16,921 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:38:16,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash -652448152, now seen corresponding path program 2 times [2022-11-20 10:38:16,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:16,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234635322] [2022-11-20 10:38:16,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:38:16,923 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 [2022-11-20 10:38:16,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:16,923 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:38:16,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:38:17,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:38:17,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:38:17,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:38:17,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:17,152 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:38:17,152 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 [2022-11-20 10:38:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:17,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:19,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:19,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234635322] [2022-11-20 10:38:19,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234635322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:38:19,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:38:19,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-20 10:38:19,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780309927] [2022-11-20 10:38:19,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:38:19,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:38:19,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:19,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:38:19,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:38:19,170 INFO L87 Difference]: Start difference. First operand 415 states and 1215 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 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) [2022-11-20 10:38:31,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:31,070 INFO L93 Difference]: Finished difference Result 2084 states and 5663 transitions. [2022-11-20 10:38:31,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 10:38:31,072 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 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 14 [2022-11-20 10:38:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:31,081 INFO L225 Difference]: With dead ends: 2084 [2022-11-20 10:38:31,082 INFO L226 Difference]: Without dead ends: 2084 [2022-11-20 10:38:31,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=275, Invalid=1285, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 10:38:31,083 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 378 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:31,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 108 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 902 Invalid, 0 Unknown, 378 Unchecked, 7.2s Time] [2022-11-20 10:38:31,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2022-11-20 10:38:31,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 575. [2022-11-20 10:38:31,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 570 states have (on average 2.992982456140351) internal successors, (1706), 574 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1706 transitions. [2022-11-20 10:38:31,113 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1706 transitions. Word has length 14 [2022-11-20 10:38:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:31,114 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 1706 transitions. [2022-11-20 10:38:31,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 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) [2022-11-20 10:38:31,114 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1706 transitions. [2022-11-20 10:38:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:38:31,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:31,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:38:31,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:38:31,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:31,328 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:38:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:31,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1967737254, now seen corresponding path program 1 times [2022-11-20 10:38:31,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:31,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100954865] [2022-11-20 10:38:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:31,329 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 [2022-11-20 10:38:31,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:31,331 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:38:31,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:38:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:31,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:38:31,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:31,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:31,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:38:31,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:31,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100954865] [2022-11-20 10:38:31,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100954865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:31,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:31,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:38:31,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016549465] [2022-11-20 10:38:31,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:31,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:38:31,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:31,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:38:31,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:38:31,470 INFO L87 Difference]: Start difference. First operand 575 states and 1706 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2022-11-20 10:38:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:31,618 INFO L93 Difference]: Finished difference Result 615 states and 1783 transitions. [2022-11-20 10:38:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:38:31,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 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 14 [2022-11-20 10:38:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:31,622 INFO L225 Difference]: With dead ends: 615 [2022-11-20 10:38:31,623 INFO L226 Difference]: Without dead ends: 610 [2022-11-20 10:38:31,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:38:31,624 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:31,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:38:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-11-20 10:38:31,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 585. [2022-11-20 10:38:31,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 580 states have (on average 2.967241379310345) internal successors, (1721), 584 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1721 transitions. [2022-11-20 10:38:31,642 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1721 transitions. Word has length 14 [2022-11-20 10:38:31,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:31,642 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 1721 transitions. [2022-11-20 10:38:31,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2022-11-20 10:38:31,643 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1721 transitions. [2022-11-20 10:38:31,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 10:38:31,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:31,644 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:38:31,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:38:31,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:31,855 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:38:31,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:31,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1407935255, now seen corresponding path program 1 times [2022-11-20 10:38:31,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:31,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382980829] [2022-11-20 10:38:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:31,856 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 [2022-11-20 10:38:31,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:31,858 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:38:31,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 10:38:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:32,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:38:32,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:32,102 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:38:32,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 10:38:32,492 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:32,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:34,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:34,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382980829] [2022-11-20 10:38:34,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382980829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:38:34,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:38:34,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-20 10:38:34,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119158859] [2022-11-20 10:38:34,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:38:34,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:38:34,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:34,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:38:34,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:38:34,017 INFO L87 Difference]: Start difference. First operand 585 states and 1721 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:46,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:46,069 INFO L93 Difference]: Finished difference Result 2118 states and 5757 transitions. [2022-11-20 10:38:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 10:38:46,071 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 10:38:46,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:46,077 INFO L225 Difference]: With dead ends: 2118 [2022-11-20 10:38:46,077 INFO L226 Difference]: Without dead ends: 2118 [2022-11-20 10:38:46,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=271, Invalid=1289, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 10:38:46,078 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 649 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 385 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:46,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 116 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 933 Invalid, 0 Unknown, 385 Unchecked, 6.6s Time] [2022-11-20 10:38:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2022-11-20 10:38:46,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 582. [2022-11-20 10:38:46,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 577 states have (on average 2.97053726169844) internal successors, (1714), 581 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1714 transitions. [2022-11-20 10:38:46,109 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1714 transitions. Word has length 15 [2022-11-20 10:38:46,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:46,109 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 1714 transitions. [2022-11-20 10:38:46,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1714 transitions. [2022-11-20 10:38:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 10:38:46,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:46,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:38:46,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:46,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:46,324 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:38:46,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:46,324 INFO L85 PathProgramCache]: Analyzing trace with hash 663373507, now seen corresponding path program 2 times [2022-11-20 10:38:46,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:46,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337324778] [2022-11-20 10:38:46,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:38:46,324 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 [2022-11-20 10:38:46,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:46,326 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:38:46,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-20 10:38:46,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:38:46,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:38:46,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:38:46,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:46,555 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:38:46,556 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 [2022-11-20 10:38:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:46,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:48,541 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:48,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:48,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337324778] [2022-11-20 10:38:48,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337324778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:38:48,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:38:48,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-20 10:38:48,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310976892] [2022-11-20 10:38:48,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:38:48,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:38:48,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:38:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:38:48,543 INFO L87 Difference]: Start difference. First operand 582 states and 1714 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:00,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:00,154 INFO L93 Difference]: Finished difference Result 2372 states and 6609 transitions. [2022-11-20 10:39:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 10:39:00,156 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 10:39:00,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:00,163 INFO L225 Difference]: With dead ends: 2372 [2022-11-20 10:39:00,163 INFO L226 Difference]: Without dead ends: 2372 [2022-11-20 10:39:00,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=273, Invalid=1449, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 10:39:00,165 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 345 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:00,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 111 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 989 Invalid, 0 Unknown, 215 Unchecked, 6.2s Time] [2022-11-20 10:39:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2022-11-20 10:39:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 583. [2022-11-20 10:39:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 578 states have (on average 2.9688581314878895) internal successors, (1716), 582 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1716 transitions. [2022-11-20 10:39:00,196 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1716 transitions. Word has length 15 [2022-11-20 10:39:00,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:00,196 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 1716 transitions. [2022-11-20 10:39:00,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1716 transitions. [2022-11-20 10:39:00,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:39:00,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:00,198 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:00,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:00,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:00,411 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:39:00,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:00,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1887086578, now seen corresponding path program 1 times [2022-11-20 10:39:00,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:39:00,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886800922] [2022-11-20 10:39:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:00,412 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 [2022-11-20 10:39:00,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:39:00,413 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:39:00,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:39:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:00,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:39:00,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:00,633 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:39:00,634 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 [2022-11-20 10:39:01,049 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:01,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:02,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:39:02,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886800922] [2022-11-20 10:39:02,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886800922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:39:02,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:39:02,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-20 10:39:02,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659774669] [2022-11-20 10:39:02,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:39:02,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:39:02,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:39:02,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:39:02,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:39:02,596 INFO L87 Difference]: Start difference. First operand 583 states and 1716 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 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) [2022-11-20 10:39:17,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:17,285 INFO L93 Difference]: Finished difference Result 2223 states and 6010 transitions. [2022-11-20 10:39:17,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 10:39:17,287 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 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 16 [2022-11-20 10:39:17,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:17,293 INFO L225 Difference]: With dead ends: 2223 [2022-11-20 10:39:17,294 INFO L226 Difference]: Without dead ends: 2223 [2022-11-20 10:39:17,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=321, Invalid=1571, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 10:39:17,295 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 507 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:17,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 127 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1096 Invalid, 0 Unknown, 177 Unchecked, 7.8s Time] [2022-11-20 10:39:17,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2022-11-20 10:39:17,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 754. [2022-11-20 10:39:17,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 749 states have (on average 3.0787716955941256) internal successors, (2306), 753 states have internal predecessors, (2306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:17,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2306 transitions. [2022-11-20 10:39:17,340 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2306 transitions. Word has length 16 [2022-11-20 10:39:17,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:17,340 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 2306 transitions. [2022-11-20 10:39:17,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 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) [2022-11-20 10:39:17,341 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2306 transitions. [2022-11-20 10:39:17,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:39:17,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:17,343 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:17,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:17,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:17,556 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:39:17,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:17,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1028967939, now seen corresponding path program 2 times [2022-11-20 10:39:17,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:39:17,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748808175] [2022-11-20 10:39:17,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:39:17,557 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 [2022-11-20 10:39:17,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:39:17,558 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:39:17,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-20 10:39:17,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:39:17,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:39:17,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:39:17,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:17,799 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:39:17,800 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 [2022-11-20 10:39:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:18,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:19,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:39:19,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748808175] [2022-11-20 10:39:19,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748808175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:39:19,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:39:19,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-20 10:39:19,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958938391] [2022-11-20 10:39:19,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:39:19,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:39:19,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:39:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:39:19,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:39:19,698 INFO L87 Difference]: Start difference. First operand 754 states and 2306 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 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) [2022-11-20 10:39:32,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:32,311 INFO L93 Difference]: Finished difference Result 1984 states and 5597 transitions. [2022-11-20 10:39:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 10:39:32,313 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 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 16 [2022-11-20 10:39:32,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:32,319 INFO L225 Difference]: With dead ends: 1984 [2022-11-20 10:39:32,319 INFO L226 Difference]: Without dead ends: 1984 [2022-11-20 10:39:32,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=296, Invalid=1264, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 10:39:32,320 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 355 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 329 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:32,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 120 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 920 Invalid, 0 Unknown, 329 Unchecked, 6.3s Time] [2022-11-20 10:39:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2022-11-20 10:39:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 958. [2022-11-20 10:39:32,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 953 states have (on average 3.0891920251836305) internal successors, (2944), 957 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 2944 transitions. [2022-11-20 10:39:32,356 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 2944 transitions. Word has length 16 [2022-11-20 10:39:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:32,356 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 2944 transitions. [2022-11-20 10:39:32,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 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) [2022-11-20 10:39:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 2944 transitions. [2022-11-20 10:39:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:39:32,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:32,359 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:32,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:32,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:32,572 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:39:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1311094322, now seen corresponding path program 2 times [2022-11-20 10:39:32,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:39:32,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589615843] [2022-11-20 10:39:32,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:39:32,573 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 [2022-11-20 10:39:32,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:39:32,575 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:39:32,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-20 10:39:32,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:39:32,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:39:32,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:39:32,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:32,816 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:39:32,816 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 [2022-11-20 10:39:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:33,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:34,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:39:34,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589615843] [2022-11-20 10:39:34,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589615843] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:39:34,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:39:34,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-20 10:39:34,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326535512] [2022-11-20 10:39:34,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:39:34,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:39:34,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:39:34,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:39:34,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:39:34,790 INFO L87 Difference]: Start difference. First operand 958 states and 2944 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 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) [2022-11-20 10:39:41,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:41,334 INFO L93 Difference]: Finished difference Result 1750 states and 5247 transitions. [2022-11-20 10:39:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 10:39:41,335 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 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 16 [2022-11-20 10:39:41,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:41,342 INFO L225 Difference]: With dead ends: 1750 [2022-11-20 10:39:41,342 INFO L226 Difference]: Without dead ends: 1750 [2022-11-20 10:39:41,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 10:39:41,343 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 96 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 289 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:41,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 149 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 532 Invalid, 0 Unknown, 289 Unchecked, 3.4s Time] [2022-11-20 10:39:41,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2022-11-20 10:39:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 968. [2022-11-20 10:39:41,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 963 states have (on average 3.075804776739356) internal successors, (2962), 967 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:41,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 2962 transitions. [2022-11-20 10:39:41,375 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 2962 transitions. Word has length 16 [2022-11-20 10:39:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:41,376 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 2962 transitions. [2022-11-20 10:39:41,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 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) [2022-11-20 10:39:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2962 transitions. [2022-11-20 10:39:41,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:39:41,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:41,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:41,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:41,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:41,592 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:39:41,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:41,593 INFO L85 PathProgramCache]: Analyzing trace with hash 101940584, now seen corresponding path program 1 times [2022-11-20 10:39:41,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:39:41,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535218175] [2022-11-20 10:39:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:41,593 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 [2022-11-20 10:39:41,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:39:41,596 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:39:41,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:39:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:41,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:39:41,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:41,823 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:39:41,824 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 [2022-11-20 10:39:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:42,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:39:42,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:39:42,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535218175] [2022-11-20 10:39:42,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535218175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:42,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:42,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:39:42,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482789420] [2022-11-20 10:39:42,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:42,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:39:42,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:39:42,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:39:42,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:39:42,055 INFO L87 Difference]: Start difference. First operand 968 states and 2962 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 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) [2022-11-20 10:39:42,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:42,557 INFO L93 Difference]: Finished difference Result 982 states and 2979 transitions. [2022-11-20 10:39:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:39:42,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 10:39:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:42,560 INFO L225 Difference]: With dead ends: 982 [2022-11-20 10:39:42,560 INFO L226 Difference]: Without dead ends: 972 [2022-11-20 10:39:42,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:39:42,561 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:42,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 12 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 52 Unchecked, 0.2s Time] [2022-11-20 10:39:42,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-11-20 10:39:42,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2022-11-20 10:39:42,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 967 states have (on average 3.062047569803516) internal successors, (2961), 971 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 2961 transitions. [2022-11-20 10:39:42,598 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 2961 transitions. Word has length 16 [2022-11-20 10:39:42,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:42,599 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 2961 transitions. [2022-11-20 10:39:42,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 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) [2022-11-20 10:39:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 2961 transitions. [2022-11-20 10:39:42,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:39:42,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:42,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:42,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:42,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:42,813 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:39:42,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:42,813 INFO L85 PathProgramCache]: Analyzing trace with hash -904730997, now seen corresponding path program 1 times [2022-11-20 10:39:42,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:39:42,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070089679] [2022-11-20 10:39:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:42,814 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 [2022-11-20 10:39:42,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:39:42,815 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:39:42,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-20 10:39:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:42,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:39:42,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:43,006 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:39:43,007 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 [2022-11-20 10:39:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:43,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:39:43,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:39:43,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070089679] [2022-11-20 10:39:43,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070089679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:43,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:43,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:39:43,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045564337] [2022-11-20 10:39:43,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:43,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:39:43,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:39:43,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:39:43,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:39:43,273 INFO L87 Difference]: Start difference. First operand 972 states and 2961 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 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) [2022-11-20 10:39:43,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:43,712 INFO L93 Difference]: Finished difference Result 980 states and 2969 transitions. [2022-11-20 10:39:43,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:39:43,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 10:39:43,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:43,715 INFO L225 Difference]: With dead ends: 980 [2022-11-20 10:39:43,715 INFO L226 Difference]: Without dead ends: 959 [2022-11-20 10:39:43,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:39:43,717 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:43,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 8 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 27 Unchecked, 0.2s Time] [2022-11-20 10:39:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-11-20 10:39:43,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2022-11-20 10:39:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 954 states have (on average 3.0786163522012577) internal successors, (2937), 958 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:43,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 2937 transitions. [2022-11-20 10:39:43,741 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 2937 transitions. Word has length 16 [2022-11-20 10:39:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:43,742 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 2937 transitions. [2022-11-20 10:39:43,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 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) [2022-11-20 10:39:43,742 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 2937 transitions. [2022-11-20 10:39:43,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:39:43,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:43,744 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2022-11-20 10:39:43,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:43,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:43,956 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:39:43,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2070389424, now seen corresponding path program 3 times [2022-11-20 10:39:43,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:39:43,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580415764] [2022-11-20 10:39:43,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:39:43,957 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 [2022-11-20 10:39:43,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:39:43,958 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:39:43,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-20 10:39:44,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 10:39:44,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:39:44,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 10:39:44,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:44,452 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:39:44,452 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 [2022-11-20 10:39:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:45,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:48,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:39:48,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580415764] [2022-11-20 10:39:48,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580415764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:39:48,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:39:48,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2022-11-20 10:39:48,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287566513] [2022-11-20 10:39:48,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:39:48,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 10:39:48,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:39:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 10:39:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2022-11-20 10:39:48,811 INFO L87 Difference]: Start difference. First operand 959 states and 2937 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:17,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:17,991 INFO L93 Difference]: Finished difference Result 3724 states and 9892 transitions. [2022-11-20 10:40:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-20 10:40:17,994 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 10:40:17,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:18,000 INFO L225 Difference]: With dead ends: 3724 [2022-11-20 10:40:18,000 INFO L226 Difference]: Without dead ends: 3724 [2022-11-20 10:40:18,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=1332, Invalid=3360, Unknown=0, NotChecked=0, Total=4692 [2022-11-20 10:40:18,001 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 1414 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 4122 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 4207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 4122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:18,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 374 Invalid, 4207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 4122 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2022-11-20 10:40:18,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2022-11-20 10:40:18,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 1035. [2022-11-20 10:40:18,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1030 states have (on average 3.0106796116504855) internal successors, (3101), 1034 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:18,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 3101 transitions. [2022-11-20 10:40:18,048 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 3101 transitions. Word has length 17 [2022-11-20 10:40:18,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:18,048 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 3101 transitions. [2022-11-20 10:40:18,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:18,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 3101 transitions. [2022-11-20 10:40:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:40:18,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:18,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:18,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-20 10:40:18,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:40:18,265 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:40:18,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:18,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1417478591, now seen corresponding path program 1 times [2022-11-20 10:40:18,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:40:18,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134226857] [2022-11-20 10:40:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:18,266 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 [2022-11-20 10:40:18,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:40:18,269 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:40:18,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:40:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:18,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:40:18,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:40:18,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:40:18,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:40:18,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134226857] [2022-11-20 10:40:18,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134226857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:18,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:40:18,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-20 10:40:18,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234704985] [2022-11-20 10:40:18,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:18,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:40:18,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:40:18,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:40:18,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:40:18,650 INFO L87 Difference]: Start difference. First operand 1035 states and 3101 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:19,229 INFO L93 Difference]: Finished difference Result 1320 states and 3812 transitions. [2022-11-20 10:40:19,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:40:19,230 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 10:40:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:19,232 INFO L225 Difference]: With dead ends: 1320 [2022-11-20 10:40:19,232 INFO L226 Difference]: Without dead ends: 1320 [2022-11-20 10:40:19,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:40:19,233 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 115 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:19,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 16 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:40:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-11-20 10:40:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 957. [2022-11-20 10:40:19,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 952 states have (on average 2.9747899159663866) internal successors, (2832), 956 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 2832 transitions. [2022-11-20 10:40:19,257 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 2832 transitions. Word has length 17 [2022-11-20 10:40:19,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:19,257 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 2832 transitions. [2022-11-20 10:40:19,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:19,258 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 2832 transitions. [2022-11-20 10:40:19,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:40:19,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:19,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:19,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-20 10:40:19,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:40:19,472 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:40:19,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash 111610032, now seen corresponding path program 1 times [2022-11-20 10:40:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:40:19,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863778552] [2022-11-20 10:40:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:19,473 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 [2022-11-20 10:40:19,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:40:19,474 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:40:19,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:40:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:19,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:40:19,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:40:19,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:40:19,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:40:19,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863778552] [2022-11-20 10:40:19,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863778552] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:40:19,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:40:19,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-11-20 10:40:19,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269911983] [2022-11-20 10:40:19,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:19,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:40:19,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:40:19,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:40:19,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:40:19,746 INFO L87 Difference]: Start difference. First operand 957 states and 2832 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:19,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:19,946 INFO L93 Difference]: Finished difference Result 961 states and 2746 transitions. [2022-11-20 10:40:19,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:40:19,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 [2022-11-20 10:40:19,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:19,949 INFO L225 Difference]: With dead ends: 961 [2022-11-20 10:40:19,949 INFO L226 Difference]: Without dead ends: 961 [2022-11-20 10:40:19,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:40:19,950 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:19,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:40:19,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-11-20 10:40:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 895. [2022-11-20 10:40:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 890 states have (on average 2.8764044943820224) internal successors, (2560), 894 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2560 transitions. [2022-11-20 10:40:19,968 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 2560 transitions. Word has length 17 [2022-11-20 10:40:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:19,968 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 2560 transitions. [2022-11-20 10:40:19,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:19,968 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 2560 transitions. [2022-11-20 10:40:19,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:40:19,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:19,970 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:19,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:40:20,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:40:20,182 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:40:20,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:20,183 INFO L85 PathProgramCache]: Analyzing trace with hash 164850850, now seen corresponding path program 1 times [2022-11-20 10:40:20,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:40:20,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652271421] [2022-11-20 10:40:20,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:20,183 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 [2022-11-20 10:40:20,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:40:20,184 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:40:20,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:40:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:20,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:40:20,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:20,409 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:40:20,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 10:40:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:20,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:22,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:40:22,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652271421] [2022-11-20 10:40:22,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652271421] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:22,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:40:22,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-20 10:40:22,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452531268] [2022-11-20 10:40:22,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:22,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:40:22,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:40:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:40:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:40:22,447 INFO L87 Difference]: Start difference. First operand 895 states and 2560 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:24,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:24,199 INFO L93 Difference]: Finished difference Result 940 states and 2678 transitions. [2022-11-20 10:40:24,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:40:24,200 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 10:40:24,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:24,201 INFO L225 Difference]: With dead ends: 940 [2022-11-20 10:40:24,201 INFO L226 Difference]: Without dead ends: 940 [2022-11-20 10:40:24,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:40:24,202 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:24,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 68 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 30 Unchecked, 1.0s Time] [2022-11-20 10:40:24,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2022-11-20 10:40:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 904. [2022-11-20 10:40:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 899 states have (on average 2.867630700778643) internal successors, (2578), 903 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2578 transitions. [2022-11-20 10:40:24,216 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2578 transitions. Word has length 17 [2022-11-20 10:40:24,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:24,216 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 2578 transitions. [2022-11-20 10:40:24,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:24,216 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2578 transitions. [2022-11-20 10:40:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:40:24,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:24,217 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:24,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:40:24,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:40:24,423 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:40:24,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:24,423 INFO L85 PathProgramCache]: Analyzing trace with hash 282153766, now seen corresponding path program 2 times [2022-11-20 10:40:24,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:40:24,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708119745] [2022-11-20 10:40:24,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:40:24,424 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 [2022-11-20 10:40:24,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:40:24,425 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:40:24,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:40:24,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:40:24,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:40:24,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:40:24,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:24,668 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:40:24,668 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 [2022-11-20 10:40:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:25,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:26,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:40:26,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708119745] [2022-11-20 10:40:26,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708119745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:26,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:40:26,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-20 10:40:26,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464308940] [2022-11-20 10:40:26,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:26,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:40:26,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:40:26,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:40:26,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:40:26,788 INFO L87 Difference]: Start difference. First operand 904 states and 2578 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:28,227 INFO L93 Difference]: Finished difference Result 960 states and 2726 transitions. [2022-11-20 10:40:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:40:28,229 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 10:40:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:28,230 INFO L225 Difference]: With dead ends: 960 [2022-11-20 10:40:28,230 INFO L226 Difference]: Without dead ends: 960 [2022-11-20 10:40:28,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-11-20 10:40:28,231 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:28,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 56 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 11 Unchecked, 0.9s Time] [2022-11-20 10:40:28,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-11-20 10:40:28,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 921. [2022-11-20 10:40:28,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 916 states have (on average 2.8646288209606987) internal successors, (2624), 920 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 2624 transitions. [2022-11-20 10:40:28,251 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 2624 transitions. Word has length 17 [2022-11-20 10:40:28,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:28,251 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 2624 transitions. [2022-11-20 10:40:28,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:28,251 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 2624 transitions. [2022-11-20 10:40:28,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:40:28,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:28,253 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:28,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:40:28,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:40:28,465 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:40:28,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:28,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1603100498, now seen corresponding path program 3 times [2022-11-20 10:40:28,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:40:28,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897990278] [2022-11-20 10:40:28,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:40:28,466 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 [2022-11-20 10:40:28,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:40:28,467 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:40:28,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:40:28,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 10:40:28,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:40:28,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:40:28,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:28,771 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:40:28,772 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 [2022-11-20 10:40:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:40:29,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:40:29,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:40:29,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897990278] [2022-11-20 10:40:29,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897990278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:29,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:40:29,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-20 10:40:29,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892014174] [2022-11-20 10:40:29,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:29,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:40:29,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:40:29,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:40:29,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:40:29,296 INFO L87 Difference]: Start difference. First operand 921 states and 2624 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:29,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:29,652 INFO L93 Difference]: Finished difference Result 905 states and 2580 transitions. [2022-11-20 10:40:29,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:40:29,653 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 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 [2022-11-20 10:40:29,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:29,654 INFO L225 Difference]: With dead ends: 905 [2022-11-20 10:40:29,654 INFO L226 Difference]: Without dead ends: 905 [2022-11-20 10:40:29,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:40:29,655 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:29,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 22 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 10 Unchecked, 0.3s Time] [2022-11-20 10:40:29,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-11-20 10:40:29,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 903. [2022-11-20 10:40:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 898 states have (on average 2.868596881959911) internal successors, (2576), 902 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 2576 transitions. [2022-11-20 10:40:29,674 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 2576 transitions. Word has length 17 [2022-11-20 10:40:29,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:29,674 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 2576 transitions. [2022-11-20 10:40:29,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:29,675 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 2576 transitions. [2022-11-20 10:40:29,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 10:40:29,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:29,677 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:29,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-20 10:40:29,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:40:29,890 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:40:29,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:29,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1796284314, now seen corresponding path program 1 times [2022-11-20 10:40:29,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:40:29,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105721581] [2022-11-20 10:40:29,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:29,891 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 [2022-11-20 10:40:29,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:40:29,892 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:40:29,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:40:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:30,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:40:30,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:30,130 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:40:30,130 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 [2022-11-20 10:40:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:30,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:32,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:40:32,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105721581] [2022-11-20 10:40:32,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105721581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:32,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:40:32,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-20 10:40:32,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431606473] [2022-11-20 10:40:32,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:32,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:40:32,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:40:32,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:40:32,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:40:32,140 INFO L87 Difference]: Start difference. First operand 903 states and 2576 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:33,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:33,772 INFO L93 Difference]: Finished difference Result 928 states and 2662 transitions. [2022-11-20 10:40:33,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:40:33,773 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 10:40:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:33,774 INFO L225 Difference]: With dead ends: 928 [2022-11-20 10:40:33,775 INFO L226 Difference]: Without dead ends: 928 [2022-11-20 10:40:33,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:40:33,775 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:33,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 68 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 40 Unchecked, 0.8s Time] [2022-11-20 10:40:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-11-20 10:40:33,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 904. [2022-11-20 10:40:33,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 899 states have (on average 2.868743047830923) internal successors, (2579), 903 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:33,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2579 transitions. [2022-11-20 10:40:33,795 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2579 transitions. Word has length 18 [2022-11-20 10:40:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:33,796 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 2579 transitions. [2022-11-20 10:40:33,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2579 transitions. [2022-11-20 10:40:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 10:40:33,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:33,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:33,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:40:34,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:40:34,011 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:40:34,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:34,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1557682358, now seen corresponding path program 2 times [2022-11-20 10:40:34,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:40:34,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584721369] [2022-11-20 10:40:34,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:40:34,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:40:34,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:40:34,013 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:40:34,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:40:34,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:40:34,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:40:34,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 10:40:34,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:34,266 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:40:34,266 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 [2022-11-20 10:40:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:34,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:36,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:40:36,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584721369] [2022-11-20 10:40:36,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584721369] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:36,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:40:36,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-20 10:40:36,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931021429] [2022-11-20 10:40:36,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:36,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:40:36,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:40:36,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:40:36,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:40:36,202 INFO L87 Difference]: Start difference. First operand 904 states and 2579 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:46,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:46,111 INFO L93 Difference]: Finished difference Result 1319 states and 3614 transitions. [2022-11-20 10:40:46,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:40:46,114 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 10:40:46,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:46,115 INFO L225 Difference]: With dead ends: 1319 [2022-11-20 10:40:46,116 INFO L226 Difference]: Without dead ends: 1319 [2022-11-20 10:40:46,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=297, Invalid=695, Unknown=0, NotChecked=0, Total=992 [2022-11-20 10:40:46,116 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 243 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:46,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 82 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-20 10:40:46,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2022-11-20 10:40:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 952. [2022-11-20 10:40:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 947 states have (on average 2.829989440337909) internal successors, (2680), 951 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:46,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 2680 transitions. [2022-11-20 10:40:46,136 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 2680 transitions. Word has length 18 [2022-11-20 10:40:46,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:46,136 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 2680 transitions. [2022-11-20 10:40:46,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:46,137 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 2680 transitions. [2022-11-20 10:40:46,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:40:46,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:46,138 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:46,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 10:40:46,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:40:46,339 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:40:46,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:46,339 INFO L85 PathProgramCache]: Analyzing trace with hash -17140667, now seen corresponding path program 3 times [2022-11-20 10:40:46,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:40:46,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78961119] [2022-11-20 10:40:46,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:40:46,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:40:46,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:40:46,340 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:40:46,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:40:46,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 10:40:46,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:40:46,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 10:40:46,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:46,797 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 10:40:46,797 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 [2022-11-20 10:40:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:47,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:51,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:40:51,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78961119] [2022-11-20 10:40:51,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78961119] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:51,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:40:51,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2022-11-20 10:40:51,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180249772] [2022-11-20 10:40:51,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:51,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 10:40:51,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:40:51,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 10:40:51,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2022-11-20 10:40:51,440 INFO L87 Difference]: Start difference. First operand 952 states and 2680 transitions. Second operand has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:41:17,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:41:17,772 INFO L93 Difference]: Finished difference Result 2141 states and 5552 transitions. [2022-11-20 10:41:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 10:41:17,775 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 10:41:17,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:41:17,778 INFO L225 Difference]: With dead ends: 2141 [2022-11-20 10:41:17,778 INFO L226 Difference]: Without dead ends: 2141 [2022-11-20 10:41:17,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=1198, Invalid=2962, Unknown=0, NotChecked=0, Total=4160 [2022-11-20 10:41:17,779 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1115 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 2931 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 3013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:41:17,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 315 Invalid, 3013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2931 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-11-20 10:41:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2022-11-20 10:41:17,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 931. [2022-11-20 10:41:17,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 926 states have (on average 2.804535637149028) internal successors, (2597), 930 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:41:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 2597 transitions. [2022-11-20 10:41:17,816 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 2597 transitions. Word has length 19 [2022-11-20 10:41:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:41:17,816 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 2597 transitions. [2022-11-20 10:41:17,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:41:17,816 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 2597 transitions. [2022-11-20 10:41:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:41:17,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:41:17,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:41:17,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:41:18,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:41:18,033 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:41:18,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1800243389, now seen corresponding path program 1 times [2022-11-20 10:41:18,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:41:18,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683306775] [2022-11-20 10:41:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:18,034 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 [2022-11-20 10:41:18,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:41:18,035 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:41:18,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:41:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:18,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 10:41:18,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:41:18,266 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 [2022-11-20 10:41:18,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:41:18,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-20 10:41:18,632 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:41:18,632 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 126 treesize of output 46 [2022-11-20 10:41:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:41:18,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:41:19,258 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_964 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_964) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse0)) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_964 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_964) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle c_~counter~0 (bvadd .cse5 (_ bv2147483647 32)))) (= (bvadd c_~counter~0 (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-20 10:41:19,328 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_964 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_964) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse0)) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_964 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_964) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse5)) (_ bv0 32)) (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd .cse5 (_ bv2147483647 32))))))))) is different from false [2022-11-20 10:41:19,405 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse8 (select |c_#memory_int| c_~A~0.base)) (.cse9 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork1_~i~0#1|))) (concat (concat (concat (select .cse8 (bvadd .cse9 (_ bv3 32) c_~A~0.offset)) (select .cse8 (bvadd .cse9 (_ bv2 32) c_~A~0.offset))) (select .cse8 (bvadd .cse9 c_~A~0.offset (_ bv1 32)))) (select .cse8 (bvadd .cse9 c_~A~0.offset))))) (.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_964 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse1 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_964) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 .cse0 (bvneg .cse1)) (_ bv0 32)) (not (bvsge .cse1 (_ bv0 32)))))) (forall ((v_ArrVal_964 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_964) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 .cse0 (bvneg .cse6)) (_ bv0 32)) (not (bvsle (bvadd c_~counter~0 .cse0) (bvadd .cse6 (_ bv2147483647 32))))))))) is different from false [2022-11-20 10:41:19,462 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (let ((.cse0 (let ((.cse8 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse8 .cse3) (select .cse8 .cse4)) (select .cse8 .cse5)) (select .cse8 c_~A~0.offset))))) (and (forall ((v_ArrVal_964 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse1 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_964) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (not (bvsle (bvadd c_~counter~0 .cse0) (bvadd .cse1 (_ bv2147483647 32)))) (= (bvadd c_~counter~0 (bvneg .cse1) .cse0) (_ bv0 32))))) (forall ((v_ArrVal_964 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_964) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse6) .cse0) (_ bv0 32)) (not (bvsge .cse6 (_ bv0 32))))))))) is different from false [2022-11-20 10:41:19,546 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:41:19,547 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 2012 treesize of output 1484 [2022-11-20 10:41:19,589 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:41:19,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1484 treesize of output 1148 [2022-11-20 10:41:19,615 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:41:19,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1148 treesize of output 924 [2022-11-20 10:41:40,714 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:41:40,714 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 1276 treesize of output 968 [2022-11-20 10:41:40,728 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:41:40,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 968 treesize of output 800 [2022-11-20 10:41:40,758 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:41:40,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 800 treesize of output 604 [2022-11-20 10:42:24,866 WARN L233 SmtUtils]: Spent 29.61s on a formula simplification. DAG size of input: 495 DAG size of output: 21 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:42:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-20 10:42:24,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:42:24,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683306775] [2022-11-20 10:42:24,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683306775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:42:24,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:42:24,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2022-11-20 10:42:24,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067218491] [2022-11-20 10:42:24,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:42:24,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:42:24,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:42:24,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:42:24,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=195, Unknown=4, NotChecked=124, Total=380 [2022-11-20 10:42:24,902 INFO L87 Difference]: Start difference. First operand 931 states and 2597 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:28,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:28,083 INFO L93 Difference]: Finished difference Result 1661 states and 4499 transitions. [2022-11-20 10:42:28,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:42:28,084 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 10:42:28,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:42:28,087 INFO L225 Difference]: With dead ends: 1661 [2022-11-20 10:42:28,087 INFO L226 Difference]: Without dead ends: 1645 [2022-11-20 10:42:28,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 4 IntricatePredicates, 3 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=137, Invalid=475, Unknown=4, NotChecked=196, Total=812 [2022-11-20 10:42:28,088 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 100 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 288 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:42:28,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 30 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 321 Invalid, 0 Unknown, 288 Unchecked, 1.8s Time] [2022-11-20 10:42:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2022-11-20 10:42:28,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1062. [2022-11-20 10:42:28,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 1057 states have (on average 2.739829706717124) internal successors, (2896), 1061 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 2896 transitions. [2022-11-20 10:42:28,107 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 2896 transitions. Word has length 19 [2022-11-20 10:42:28,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:42:28,107 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 2896 transitions. [2022-11-20 10:42:28,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:28,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 2896 transitions. [2022-11-20 10:42:28,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:42:28,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:42:28,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:42:28,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 10:42:28,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:42:28,309 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:42:28,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:28,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1838126009, now seen corresponding path program 2 times [2022-11-20 10:42:28,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:42:28,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909520219] [2022-11-20 10:42:28,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:42:28,310 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 [2022-11-20 10:42:28,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:42:28,311 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:42:28,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:42:28,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:42:28,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:42:28,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 10:42:28,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:28,539 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 [2022-11-20 10:42:28,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-20 10:42:29,177 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:42:29,177 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 126 treesize of output 46 [2022-11-20 10:42:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:42:29,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:42:30,077 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_993 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_993) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (bvadd c_~counter~0 (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_993 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_993) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle c_~counter~0 (bvadd .cse5 (_ bv2147483647 32)))) (= (bvadd c_~counter~0 (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-20 10:42:30,175 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_993 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_993) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd .cse0 (_ bv2147483647 32)))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_993 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_993) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-20 10:42:30,474 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-20 10:42:30,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-20 10:42:30,512 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:42:30,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54 [2022-11-20 10:42:34,083 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-20 10:42:34,084 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 310 treesize of output 166 [2022-11-20 10:42:34,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:42:34,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-20 10:42:44,276 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 528 DAG size of output: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:42:44,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-20 10:42:44,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:42:44,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909520219] [2022-11-20 10:42:44,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909520219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:42:44,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:42:44,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2022-11-20 10:42:44,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194403246] [2022-11-20 10:42:44,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:42:44,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:42:44,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:42:44,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:42:44,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=247, Unknown=2, NotChecked=66, Total=380 [2022-11-20 10:42:44,733 INFO L87 Difference]: Start difference. First operand 1062 states and 2896 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:51,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:51,459 INFO L93 Difference]: Finished difference Result 1664 states and 4468 transitions. [2022-11-20 10:42:51,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:42:51,460 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 10:42:51,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:42:51,463 INFO L225 Difference]: With dead ends: 1664 [2022-11-20 10:42:51,463 INFO L226 Difference]: Without dead ends: 1652 [2022-11-20 10:42:51,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=152, Invalid=556, Unknown=2, NotChecked=102, Total=812 [2022-11-20 10:42:51,464 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 117 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:42:51,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 25 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 262 Invalid, 0 Unknown, 292 Unchecked, 1.6s Time] [2022-11-20 10:42:51,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2022-11-20 10:42:51,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1101. [2022-11-20 10:42:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1096 states have (on average 2.7144160583941606) internal successors, (2975), 1100 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 2975 transitions. [2022-11-20 10:42:51,485 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 2975 transitions. Word has length 19 [2022-11-20 10:42:51,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:42:51,486 INFO L495 AbstractCegarLoop]: Abstraction has 1101 states and 2975 transitions. [2022-11-20 10:42:51,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 2975 transitions. [2022-11-20 10:42:51,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:42:51,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:42:51,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:42:51,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 10:42:51,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:42:51,701 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:42:51,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:51,702 INFO L85 PathProgramCache]: Analyzing trace with hash 522765411, now seen corresponding path program 3 times [2022-11-20 10:42:51,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:42:51,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607824443] [2022-11-20 10:42:51,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:42:51,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:42:51,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:42:51,703 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:42:51,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:42:51,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 10:42:51,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:42:51,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 10:42:51,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:51,926 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 42 treesize of output 38 [2022-11-20 10:42:52,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-20 10:42:52,560 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:42:52,560 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 126 treesize of output 46 [2022-11-20 10:42:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:42:52,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:42:53,557 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1020 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1020) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse0))) (= (bvadd (bvneg .cse0) c_~counter~0) (_ bv0 32))))) (forall ((v_ArrVal_1020 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1020) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd (bvneg .cse5) c_~counter~0) (_ bv0 32))))))) is different from false [2022-11-20 10:42:53,661 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1020 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1020) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse0))) (= (bvadd (bvneg .cse0) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32))))) (forall ((v_ArrVal_1020 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1020) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd (bvneg .cse5) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32))))))) is different from false [2022-11-20 10:42:54,013 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-20 10:42:54,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-20 10:42:54,037 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:42:54,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54 [2022-11-20 10:42:56,077 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-20 10:42:56,078 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 310 treesize of output 166 [2022-11-20 10:42:56,104 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:42:56,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-20 10:43:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-20 10:43:03,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:43:03,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607824443] [2022-11-20 10:43:03,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607824443] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:43:03,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:43:03,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2022-11-20 10:43:03,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436572722] [2022-11-20 10:43:03,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:43:03,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:43:03,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:43:03,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:43:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=247, Unknown=2, NotChecked=66, Total=380 [2022-11-20 10:43:03,689 INFO L87 Difference]: Start difference. First operand 1101 states and 2975 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:43:07,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:43:07,662 INFO L93 Difference]: Finished difference Result 1685 states and 4566 transitions. [2022-11-20 10:43:07,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:43:07,663 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 10:43:07,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:43:07,666 INFO L225 Difference]: With dead ends: 1685 [2022-11-20 10:43:07,666 INFO L226 Difference]: Without dead ends: 1673 [2022-11-20 10:43:07,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=176, Invalid=700, Unknown=2, NotChecked=114, Total=992 [2022-11-20 10:43:07,667 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 96 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 347 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:43:07,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 34 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 370 Invalid, 0 Unknown, 347 Unchecked, 2.1s Time] [2022-11-20 10:43:07,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2022-11-20 10:43:07,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1103. [2022-11-20 10:43:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1098 states have (on average 2.724954462659381) internal successors, (2992), 1102 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:43:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2992 transitions. [2022-11-20 10:43:07,688 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2992 transitions. Word has length 19 [2022-11-20 10:43:07,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:43:07,688 INFO L495 AbstractCegarLoop]: Abstraction has 1103 states and 2992 transitions. [2022-11-20 10:43:07,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:43:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2992 transitions. [2022-11-20 10:43:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:43:07,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:43:07,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:43:07,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:43:07,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:43:07,890 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:43:07,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:43:07,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1029344515, now seen corresponding path program 4 times [2022-11-20 10:43:07,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:43:07,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921139711] [2022-11-20 10:43:07,891 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:43:07,891 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 [2022-11-20 10:43:07,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:43:07,893 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:43:07,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:43:08,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:43:08,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:43:08,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 10:43:08,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:43:08,176 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 42 treesize of output 38 [2022-11-20 10:43:08,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:43:08,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-20 10:43:08,773 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:43:08,774 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 126 treesize of output 46 [2022-11-20 10:43:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:43:09,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:43:09,787 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1048 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1048) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) c_~counter~0) (_ bv0 32)) (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse0)))))) (forall ((v_ArrVal_1048 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1048) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse5) c_~counter~0) (_ bv0 32)) (not (bvsge .cse5 (_ bv0 32)))))))) is different from false [2022-11-20 10:43:09,894 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1048 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1048) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (bvadd (bvneg .cse0) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32))))) (forall ((v_ArrVal_1048 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1048) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse5))) (= (bvadd (bvneg .cse5) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32))))))) is different from false [2022-11-20 10:43:10,452 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (let ((.cse1 (let ((.cse8 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse8 .cse3) (select .cse8 .cse4)) (select .cse8 .cse5)) (select .cse8 c_~A~0.offset))))) (and (forall ((v_ArrVal_1048 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1048) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) c_~counter~0 .cse1) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_1048 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1048) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse6) c_~counter~0 .cse1) (_ bv0 32)) (not (bvsle (bvadd c_~counter~0 .cse1) (bvadd (_ bv2147483647 32) .cse6))))))))) is different from false [2022-11-20 10:43:10,550 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:43:10,550 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 996 treesize of output 732 [2022-11-20 10:43:10,582 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:43:10,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 732 treesize of output 620 [2022-11-20 10:43:10,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:43:10,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 620 treesize of output 452 [2022-11-20 10:43:12,063 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:43:12,064 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 628 treesize of output 474 [2022-11-20 10:43:12,084 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:43:12,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 474 treesize of output 390 [2022-11-20 10:43:12,105 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:43:12,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 390 treesize of output 292 [2022-11-20 10:43:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-20 10:43:20,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:43:20,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921139711] [2022-11-20 10:43:20,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921139711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:43:20,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:43:20,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2022-11-20 10:43:20,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610428420] [2022-11-20 10:43:20,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:43:20,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:43:20,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:43:20,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:43:20,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=216, Unknown=10, NotChecked=96, Total=380 [2022-11-20 10:43:20,071 INFO L87 Difference]: Start difference. First operand 1103 states and 2992 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:43:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:43:25,917 INFO L93 Difference]: Finished difference Result 1924 states and 5259 transitions. [2022-11-20 10:43:25,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:43:25,918 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 10:43:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:43:25,921 INFO L225 Difference]: With dead ends: 1924 [2022-11-20 10:43:25,922 INFO L226 Difference]: Without dead ends: 1866 [2022-11-20 10:43:25,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=166, Invalid=648, Unknown=10, NotChecked=168, Total=992 [2022-11-20 10:43:25,923 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 153 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 451 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:43:25,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 31 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 372 Invalid, 0 Unknown, 451 Unchecked, 2.1s Time] [2022-11-20 10:43:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2022-11-20 10:43:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1094. [2022-11-20 10:43:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1089 states have (on average 2.7823691460055096) internal successors, (3030), 1093 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:43:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 3030 transitions. [2022-11-20 10:43:25,968 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 3030 transitions. Word has length 19 [2022-11-20 10:43:25,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:43:25,970 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 3030 transitions. [2022-11-20 10:43:25,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:43:25,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 3030 transitions. [2022-11-20 10:43:25,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:43:25,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:43:25,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:43:25,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:43:26,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:43:26,186 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:43:26,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:43:26,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1853500513, now seen corresponding path program 5 times [2022-11-20 10:43:26,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:43:26,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728696552] [2022-11-20 10:43:26,187 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:43:26,188 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 [2022-11-20 10:43:26,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:43:26,188 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 10:43:26,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 10:43:26,462 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:43:26,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-20 10:43:26,462 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:43:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:43:26,623 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-20 10:43:26,624 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:43:26,625 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (21 of 22 remaining) [2022-11-20 10:43:26,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2022-11-20 10:43:26,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2022-11-20 10:43:26,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2022-11-20 10:43:26,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2022-11-20 10:43:26,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2022-11-20 10:43:26,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2022-11-20 10:43:26,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2022-11-20 10:43:26,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2022-11-20 10:43:26,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2022-11-20 10:43:26,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2022-11-20 10:43:26,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2022-11-20 10:43:26,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2022-11-20 10:43:26,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2022-11-20 10:43:26,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2022-11-20 10:43:26,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (6 of 22 remaining) [2022-11-20 10:43:26,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 22 remaining) [2022-11-20 10:43:26,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 22 remaining) [2022-11-20 10:43:26,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 22 remaining) [2022-11-20 10:43:26,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 22 remaining) [2022-11-20 10:43:26,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 22 remaining) [2022-11-20 10:43:26,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 22 remaining) [2022-11-20 10:43:26,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-20 10:43:26,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1166d134-bd08-4cb3-a08e-add83f7542a0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:43:26,832 INFO L444 BasicCegarLoop]: Path program histogram: [5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:43:26,837 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:43:26,837 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:43:26,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:43:26 BasicIcfg [2022-11-20 10:43:26,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:43:26,879 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:43:26,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:43:26,879 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:43:26,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:37:08" (3/4) ... [2022-11-20 10:43:26,883 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 10:43:26,883 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:43:26,883 INFO L158 Benchmark]: Toolchain (without parser) took 380203.51ms. Allocated memory was 92.3MB in the beginning and 195.0MB in the end (delta: 102.8MB). Free memory was 70.9MB in the beginning and 118.4MB in the end (delta: -47.5MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. [2022-11-20 10:43:26,883 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 67.1MB. Free memory was 45.6MB in the beginning and 45.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:43:26,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.30ms. Allocated memory is still 92.3MB. Free memory was 70.8MB in the beginning and 57.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 10:43:26,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.53ms. Allocated memory is still 92.3MB. Free memory was 57.2MB in the beginning and 55.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:43:26,884 INFO L158 Benchmark]: Boogie Preprocessor took 38.77ms. Allocated memory is still 92.3MB. Free memory was 55.2MB in the beginning and 53.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:43:26,884 INFO L158 Benchmark]: RCFGBuilder took 975.10ms. Allocated memory is still 92.3MB. Free memory was 53.3MB in the beginning and 63.6MB in the end (delta: -10.3MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2022-11-20 10:43:26,885 INFO L158 Benchmark]: TraceAbstraction took 378762.45ms. Allocated memory was 92.3MB in the beginning and 195.0MB in the end (delta: 102.8MB). Free memory was 63.3MB in the beginning and 118.4MB in the end (delta: -55.1MB). Peak memory consumption was 48.7MB. Max. memory is 16.1GB. [2022-11-20 10:43:26,885 INFO L158 Benchmark]: Witness Printer took 3.97ms. Allocated memory is still 195.0MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:43:26,886 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 67.1MB. Free memory was 45.6MB in the beginning and 45.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.30ms. Allocated memory is still 92.3MB. Free memory was 70.8MB in the beginning and 57.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.53ms. Allocated memory is still 92.3MB. Free memory was 57.2MB in the beginning and 55.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.77ms. Allocated memory is still 92.3MB. Free memory was 55.2MB in the beginning and 53.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 975.10ms. Allocated memory is still 92.3MB. Free memory was 53.3MB in the beginning and 63.6MB in the end (delta: -10.3MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * TraceAbstraction took 378762.45ms. Allocated memory was 92.3MB in the beginning and 195.0MB in the end (delta: 102.8MB). Free memory was 63.3MB in the beginning and 118.4MB in the end (delta: -55.1MB). Peak memory consumption was 48.7MB. Max. memory is 16.1GB. * Witness Printer took 3.97ms. Allocated memory is still 195.0MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.2s, 133 PlacesBefore, 41 PlacesAfterwards, 135 TransitionsBefore, 37 TransitionsAfterwards, 936 CoEnabledTransitionPairs, 7 FixpointIterations, 89 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 144 TotalNumberOfCompositions, 1648 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1350, independent: 1304, independent conditional: 0, independent unconditional: 1304, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 573, independent: 557, independent conditional: 0, independent unconditional: 557, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 573, independent: 557, independent conditional: 0, independent unconditional: 557, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 358, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 358, dependent conditional: 0, dependent unconditional: 358, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1350, independent: 747, independent conditional: 0, independent unconditional: 747, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 573, unknown conditional: 0, unknown unconditional: 573] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 86, Positive conditional cache size: 0, Positive unconditional cache size: 86, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 87]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 87. Possible FailurePath: [L41] 0 int* A; [L42] 0 int counter, N; [L75] 0 pthread_t t1, t2; [L77] 0 N = __VERIFIER_nondet_int() [L78] CALL, EXPR 0 create_fresh_int_array(N) [L93] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L93] RET 0 assume_abort_if_not(size >= 0) [L94] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L94] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L96] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L97] 0 int i = 0; VAL [\old(size)=1, A={0:0}, arr={10:0}, counter=0, i=0, N=1, size=1] [L97] COND TRUE 0 i < size [L98] 0 arr[i] = __VERIFIER_nondet_int() [L97] 0 i++ VAL [\old(size)=1, A={0:0}, arr={10:0}, counter=0, i=1, N=1, size=1] [L97] COND FALSE 0 !(i < size) [L100] 0 return arr; [L78] RET, EXPR 0 create_fresh_int_array(N) [L78] 0 A = create_fresh_int_array(N) [L81] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={10:0}, counter=0, N=1, pthread_create(&t1, 0, thread1, 0)=0, t1={23:0}, t2={31:0}] [L49] 1 int i=0; VAL [A={10:0}, counter=0, i=0, N=1] [L49] COND TRUE 1 i= 0 || a >= -2147483648 - b) [L38] COND FALSE 1 !(!cond) [L110] RET 1 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L111] CALL 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L38] COND FALSE 1 !(!cond) [L111] RET 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L112] 1 return a + b; [L51] RET, EXPR 1 plus(counter, A[i]) [L51] 1 int tmp = plus(counter, A[i]); [L82] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={10:0}, counter=0, N=1, pthread_create(&t2, 0, thread2, 0)=1, t1={23:0}, t2={31:0}] [L83] 0 \read(t1) VAL [\read(t1)=0, A={10:0}, counter=0, N=1, t1={23:0}, t2={31:0}] [L62] 2 int i=0; VAL [A={10:0}, counter=0, i=0, N=1] [L62] COND TRUE 2 i= b - 2147483648) [L38] COND FALSE 2 !(!cond) [L104] RET 2 assume_abort_if_not(b <= 0 || a >= b - 2147483648) [L105] CALL 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L38] COND FALSE 2 !(!cond) [L105] RET 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L106] 2 return a - b; [L64] RET, EXPR 2 minus(counter, A[i]) [L64] 2 int tmp = minus(counter, A[i]); [L54] 1 counter = tmp [L49] 1 i++ VAL [A={10:0}, counter=-1073741824, i=1, N=1, tmp=-1073741824] [L67] 2 counter = tmp [L62] 2 i++ VAL [A={10:0}, counter=1073741824, i=1, N=1, tmp=1073741824] [L49] COND FALSE 1 !(i