./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/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_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 12:22:54,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:22:54,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:22:54,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:22:54,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:22:54,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:22:54,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:22:54,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:22:54,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:22:54,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:22:54,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:22:54,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:22:54,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:22:54,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:22:54,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:22:54,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:22:54,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:22:54,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:22:54,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:22:54,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:22:54,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:22:54,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:22:54,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:22:54,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:22:54,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:22:54,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:22:54,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:22:54,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:22:54,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:22:54,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:22:54,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:22:54,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:22:54,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:22:54,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:22:54,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:22:54,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:22:54,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:22:54,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:22:54,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:22:54,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:22:54,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:22:54,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:22:54,694 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:22:54,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:22:54,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:22:54,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:22:54,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:22:54,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:22:54,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:22:54,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:22:54,698 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:22:54,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:22:54,700 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:22:54,700 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:22:54,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:22:54,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:22:54,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:22:54,701 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:22:54,701 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:22:54,701 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:22:54,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:22:54,702 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:22:54,702 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:22:54,702 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:22:54,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:22:54,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:22:54,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:22:54,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:22:54,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:22:54,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:22:54,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:22:54,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:22:54,706 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_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2022-11-16 12:22:55,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:22:55,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:22:55,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:22:55,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:22:55,075 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:22:55,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2022-11-16 12:22:55,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/data/392d85de4/593673fc9b9a46fdb1b9c20e2bde03c2/FLAGf080a10c5 [2022-11-16 12:22:55,772 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:22:55,773 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2022-11-16 12:22:55,793 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/data/392d85de4/593673fc9b9a46fdb1b9c20e2bde03c2/FLAGf080a10c5 [2022-11-16 12:22:56,099 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/data/392d85de4/593673fc9b9a46fdb1b9c20e2bde03c2 [2022-11-16 12:22:56,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:22:56,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:22:56,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:22:56,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:22:56,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:22:56,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:22:56" (1/1) ... [2022-11-16 12:22:56,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f53270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:56, skipping insertion in model container [2022-11-16 12:22:56,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:22:56" (1/1) ... [2022-11-16 12:22:56,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:22:56,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:22:56,393 WARN L229 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_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-11-16 12:22:56,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:22:56,441 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) [2022-11-16 12:22:56,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@50fb31c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:56, skipping insertion in model container [2022-11-16 12:22:56,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:22:56,444 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 12:22:56,446 INFO L158 Benchmark]: Toolchain (without parser) took 340.28ms. Allocated memory is still 136.3MB. Free memory was 101.2MB in the beginning and 112.9MB in the end (delta: -11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:22:56,448 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 136.3MB. Free memory is still 117.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:22:56,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.41ms. Allocated memory is still 136.3MB. Free memory was 100.9MB in the beginning and 113.0MB in the end (delta: -12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:22:56,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 136.3MB. Free memory is still 117.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.41ms. Allocated memory is still 136.3MB. Free memory was 100.9MB in the beginning and 113.0MB in the end (delta: -12.1MB). Peak memory consumption was 8.4MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/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_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 12:22:58,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:22:58,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:22:58,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:22:58,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:22:58,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:22:58,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:22:58,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:22:58,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:22:58,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:22:58,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:22:58,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:22:58,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:22:58,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:22:58,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:22:58,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:22:58,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:22:58,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:22:58,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:22:58,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:22:58,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:22:58,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:22:58,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:22:58,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:22:58,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:22:58,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:22:58,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:22:58,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:22:58,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:22:58,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:22:58,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:22:58,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:22:58,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:22:58,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:22:58,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:22:58,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:22:58,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:22:58,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:22:58,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:22:58,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:22:58,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:22:58,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 12:22:58,831 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:22:58,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:22:58,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:22:58,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:22:58,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:22:58,832 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:22:58,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:22:58,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:22:58,833 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:22:58,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:22:58,834 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:22:58,834 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:22:58,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:22:58,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:22:58,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:22:58,835 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:22:58,835 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:22:58,835 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:22:58,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:22:58,835 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:22:58,836 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:22:58,836 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:22:58,836 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:22:58,836 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:22:58,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:22:58,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:22:58,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:22:58,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:22:58,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:22:58,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:22:58,838 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:22:58,838 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:22:58,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:22:58,838 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_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2022-11-16 12:22:59,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:22:59,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:22:59,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:22:59,249 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:22:59,253 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:22:59,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2022-11-16 12:22:59,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/data/c76a12418/9c273e2708d2413aa33e933c97720b8c/FLAG65619cb91 [2022-11-16 12:23:00,036 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:23:00,038 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2022-11-16 12:23:00,049 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/data/c76a12418/9c273e2708d2413aa33e933c97720b8c/FLAG65619cb91 [2022-11-16 12:23:00,375 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/data/c76a12418/9c273e2708d2413aa33e933c97720b8c [2022-11-16 12:23:00,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:23:00,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:23:00,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:23:00,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:23:00,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:23:00,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:23:00" (1/1) ... [2022-11-16 12:23:00,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c38546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00, skipping insertion in model container [2022-11-16 12:23:00,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:23:00" (1/1) ... [2022-11-16 12:23:00,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:23:00,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:23:00,641 WARN L229 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_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-11-16 12:23:00,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:23:00,742 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 12:23:00,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:23:00,820 WARN L229 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_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-11-16 12:23:00,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:23:00,846 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:23:00,899 WARN L229 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_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-11-16 12:23:00,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:23:00,925 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:23:00,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00 WrapperNode [2022-11-16 12:23:00,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:23:00,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:23:00,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:23:00,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:23:00,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00" (1/1) ... [2022-11-16 12:23:00,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00" (1/1) ... [2022-11-16 12:23:01,009 INFO L138 Inliner]: procedures = 28, calls = 40, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 140 [2022-11-16 12:23:01,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:23:01,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:23:01,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:23:01,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:23:01,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00" (1/1) ... [2022-11-16 12:23:01,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00" (1/1) ... [2022-11-16 12:23:01,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00" (1/1) ... [2022-11-16 12:23:01,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00" (1/1) ... [2022-11-16 12:23:01,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00" (1/1) ... [2022-11-16 12:23:01,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00" (1/1) ... [2022-11-16 12:23:01,083 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00" (1/1) ... [2022-11-16 12:23:01,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00" (1/1) ... [2022-11-16 12:23:01,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:23:01,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:23:01,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:23:01,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:23:01,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00" (1/1) ... [2022-11-16 12:23:01,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:23:01,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:01,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:23:01,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:23:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:23:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:23:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:23:01,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 12:23:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:23:01,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:23:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:23:01,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:23:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:23:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:23:01,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:23:01,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:23:01,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:23:01,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:23:01,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 12:23:01,219 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:23:01,381 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:23:01,383 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:23:02,027 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:23:02,338 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:23:02,338 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:23:02,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:02 BoogieIcfgContainer [2022-11-16 12:23:02,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:23:02,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:23:02,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:23:02,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:23:02,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:23:00" (1/3) ... [2022-11-16 12:23:02,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11839c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:23:02, skipping insertion in model container [2022-11-16 12:23:02,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:00" (2/3) ... [2022-11-16 12:23:02,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11839c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:23:02, skipping insertion in model container [2022-11-16 12:23:02,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:02" (3/3) ... [2022-11-16 12:23:02,363 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2022-11-16 12:23:02,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:23:02,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-16 12:23:02,415 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:23:02,564 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:23:02,630 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 12:23:02,650 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 135 transitions, 286 flow [2022-11-16 12:23:02,657 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 135 transitions, 286 flow [2022-11-16 12:23:02,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 135 transitions, 286 flow [2022-11-16 12:23:02,780 INFO L130 PetriNetUnfolder]: 9/133 cut-off events. [2022-11-16 12:23:02,780 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:23:02,793 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. [2022-11-16 12:23:02,795 INFO L119 LiptonReduction]: Number of co-enabled transitions 936 [2022-11-16 12:23:23,176 INFO L134 LiptonReduction]: Checked pairs total: 1648 [2022-11-16 12:23:23,176 INFO L136 LiptonReduction]: Total number of compositions: 144 [2022-11-16 12:23:23,185 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 37 transitions, 90 flow [2022-11-16 12:23:23,217 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) [2022-11-16 12:23:23,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:23:23,243 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;@7e5f2118, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:23:23,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-16 12:23:23,246 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) [2022-11-16 12:23:23,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:23:23,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:23,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:23:23,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:23,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:23,260 INFO L85 PathProgramCache]: Analyzing trace with hash 20436, now seen corresponding path program 1 times [2022-11-16 12:23:23,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:23,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443792288] [2022-11-16 12:23:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:23,276 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 [2022-11-16 12:23:23,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:23,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:23,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:23,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:23:23,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:23,618 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-16 12:23:23,619 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 12 treesize of output 33 [2022-11-16 12:23:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:23,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:23,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:23,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443792288] [2022-11-16 12:23:23,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443792288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:23,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:23,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:23:23,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134056248] [2022-11-16 12:23:23,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:23,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:23,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:23,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:23,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:23,727 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) [2022-11-16 12:23:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:23,963 INFO L93 Difference]: Finished difference Result 200 states and 501 transitions. [2022-11-16 12:23:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:23,966 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 [2022-11-16 12:23:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:23,984 INFO L225 Difference]: With dead ends: 200 [2022-11-16 12:23:23,984 INFO L226 Difference]: Without dead ends: 200 [2022-11-16 12:23:23,986 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 [2022-11-16 12:23:23,994 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 [2022-11-16 12:23:24,001 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] [2022-11-16 12:23:24,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-16 12:23:24,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-11-16 12:23:24,094 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) [2022-11-16 12:23:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 501 transitions. [2022-11-16 12:23:24,101 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 501 transitions. Word has length 2 [2022-11-16 12:23:24,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:24,102 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 501 transitions. [2022-11-16 12:23:24,103 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) [2022-11-16 12:23:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 501 transitions. [2022-11-16 12:23:24,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:23:24,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:24,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:23:24,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:24,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:24,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:24,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:24,319 INFO L85 PathProgramCache]: Analyzing trace with hash 20564, now seen corresponding path program 1 times [2022-11-16 12:23:24,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:24,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995926721] [2022-11-16 12:23:24,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:24,320 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 [2022-11-16 12:23:24,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:24,322 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:24,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:24,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:23:24,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:24,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:24,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:24,553 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:23:24,553 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 [2022-11-16 12:23:24,578 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 [2022-11-16 12:23:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:24,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:24,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:24,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995926721] [2022-11-16 12:23:24,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995926721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:24,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:24,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:23:24,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214443079] [2022-11-16 12:23:24,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:24,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:24,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:24,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:24,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:24,633 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) [2022-11-16 12:23:24,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:24,790 INFO L93 Difference]: Finished difference Result 201 states and 505 transitions. [2022-11-16 12:23:24,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:24,791 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 [2022-11-16 12:23:24,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:24,793 INFO L225 Difference]: With dead ends: 201 [2022-11-16 12:23:24,793 INFO L226 Difference]: Without dead ends: 201 [2022-11-16 12:23:24,795 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 [2022-11-16 12:23:24,797 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 [2022-11-16 12:23:24,798 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] [2022-11-16 12:23:24,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-16 12:23:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-11-16 12:23:24,813 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) [2022-11-16 12:23:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 505 transitions. [2022-11-16 12:23:24,816 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 505 transitions. Word has length 2 [2022-11-16 12:23:24,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:24,817 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 505 transitions. [2022-11-16 12:23:24,817 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) [2022-11-16 12:23:24,818 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 505 transitions. [2022-11-16 12:23:24,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:23:24,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:24,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:23:24,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:25,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:25,042 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:25,042 INFO L85 PathProgramCache]: Analyzing trace with hash 20565, now seen corresponding path program 1 times [2022-11-16 12:23:25,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:25,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863691261] [2022-11-16 12:23:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:25,043 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 [2022-11-16 12:23:25,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:25,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:25,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:25,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:23:25,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:25,185 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-16 12:23:25,185 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 [2022-11-16 12:23:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:25,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:25,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:25,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863691261] [2022-11-16 12:23:25,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863691261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:25,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:25,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:23:25,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123486608] [2022-11-16 12:23:25,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:25,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:25,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:25,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:25,230 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) [2022-11-16 12:23:25,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:25,384 INFO L93 Difference]: Finished difference Result 201 states and 504 transitions. [2022-11-16 12:23:25,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:25,385 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 [2022-11-16 12:23:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:25,387 INFO L225 Difference]: With dead ends: 201 [2022-11-16 12:23:25,387 INFO L226 Difference]: Without dead ends: 201 [2022-11-16 12:23:25,388 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 [2022-11-16 12:23:25,389 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 [2022-11-16 12:23:25,389 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] [2022-11-16 12:23:25,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-16 12:23:25,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-11-16 12:23:25,416 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) [2022-11-16 12:23:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 504 transitions. [2022-11-16 12:23:25,426 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 504 transitions. Word has length 2 [2022-11-16 12:23:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:25,426 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 504 transitions. [2022-11-16 12:23:25,426 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) [2022-11-16 12:23:25,427 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 504 transitions. [2022-11-16 12:23:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:23:25,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:25,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:23:25,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:25,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:25,641 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:25,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:25,642 INFO L85 PathProgramCache]: Analyzing trace with hash 20437, now seen corresponding path program 1 times [2022-11-16 12:23:25,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:25,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891888575] [2022-11-16 12:23:25,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:25,643 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 [2022-11-16 12:23:25,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:25,644 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:25,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:25,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:23:25,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:25,844 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:23:25,845 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 [2022-11-16 12:23:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:25,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:25,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:25,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891888575] [2022-11-16 12:23:25,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891888575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:25,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:25,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:23:25,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210207386] [2022-11-16 12:23:25,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:25,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:25,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:25,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:25,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:25,882 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) [2022-11-16 12:23:26,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:26,237 INFO L93 Difference]: Finished difference Result 396 states and 998 transitions. [2022-11-16 12:23:26,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:26,239 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 [2022-11-16 12:23:26,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:26,242 INFO L225 Difference]: With dead ends: 396 [2022-11-16 12:23:26,242 INFO L226 Difference]: Without dead ends: 396 [2022-11-16 12:23:26,243 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 [2022-11-16 12:23:26,244 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-11-16 12:23:26,244 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] [2022-11-16 12:23:26,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-11-16 12:23:26,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 201. [2022-11-16 12:23:26,286 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) [2022-11-16 12:23:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 503 transitions. [2022-11-16 12:23:26,288 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 503 transitions. Word has length 2 [2022-11-16 12:23:26,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:26,288 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 503 transitions. [2022-11-16 12:23:26,289 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) [2022-11-16 12:23:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 503 transitions. [2022-11-16 12:23:26,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:23:26,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:26,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:23:26,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:26,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:26,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash 637340, now seen corresponding path program 1 times [2022-11-16 12:23:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:26,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736746594] [2022-11-16 12:23:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:26,510 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 [2022-11-16 12:23:26,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:26,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:26,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:26,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:23:26,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:26,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:26,718 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-16 12:23:26,719 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 [2022-11-16 12:23:26,733 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 [2022-11-16 12:23:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:26,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:27,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:27,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736746594] [2022-11-16 12:23:27,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736746594] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:27,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:23:27,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-16 12:23:27,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498700197] [2022-11-16 12:23:27,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:27,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:23:27,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:27,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:23:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:23:27,210 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) [2022-11-16 12:23:27,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:27,792 INFO L93 Difference]: Finished difference Result 203 states and 511 transitions. [2022-11-16 12:23:27,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:23:27,794 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 [2022-11-16 12:23:27,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:27,796 INFO L225 Difference]: With dead ends: 203 [2022-11-16 12:23:27,796 INFO L226 Difference]: Without dead ends: 203 [2022-11-16 12:23:27,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:23:27,797 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:27,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 14 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 43 Unchecked, 0.6s Time] [2022-11-16 12:23:27,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-16 12:23:27,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-11-16 12:23:27,826 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) [2022-11-16 12:23:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 511 transitions. [2022-11-16 12:23:27,828 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 511 transitions. Word has length 3 [2022-11-16 12:23:27,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:27,828 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 511 transitions. [2022-11-16 12:23:27,828 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) [2022-11-16 12:23:27,829 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 511 transitions. [2022-11-16 12:23:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:23:27,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:27,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:23:27,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:28,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:28,030 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:28,031 INFO L85 PathProgramCache]: Analyzing trace with hash 637341, now seen corresponding path program 1 times [2022-11-16 12:23:28,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:28,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725807725] [2022-11-16 12:23:28,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:28,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:28,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:28,034 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:28,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:28,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:23:28,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:28,199 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-16 12:23:28,200 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 [2022-11-16 12:23:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:28,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:28,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:28,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725807725] [2022-11-16 12:23:28,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725807725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:28,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:28,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:23:28,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732770253] [2022-11-16 12:23:28,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:28,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:28,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:28,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:28,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:28,292 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) [2022-11-16 12:23:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:28,410 INFO L93 Difference]: Finished difference Result 202 states and 508 transitions. [2022-11-16 12:23:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:28,411 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 [2022-11-16 12:23:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:28,413 INFO L225 Difference]: With dead ends: 202 [2022-11-16 12:23:28,413 INFO L226 Difference]: Without dead ends: 202 [2022-11-16 12:23:28,413 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 [2022-11-16 12:23:28,414 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 [2022-11-16 12:23:28,415 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] [2022-11-16 12:23:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-16 12:23:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-11-16 12:23:28,430 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) [2022-11-16 12:23:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 508 transitions. [2022-11-16 12:23:28,434 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 508 transitions. Word has length 3 [2022-11-16 12:23:28,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:28,434 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 508 transitions. [2022-11-16 12:23:28,435 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) [2022-11-16 12:23:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 508 transitions. [2022-11-16 12:23:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:23:28,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:28,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:23:28,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:23:28,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:28,654 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:28,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:28,654 INFO L85 PathProgramCache]: Analyzing trace with hash 637213, now seen corresponding path program 1 times [2022-11-16 12:23:28,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:28,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131160635] [2022-11-16 12:23:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:28,655 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 [2022-11-16 12:23:28,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:28,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:28,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:28,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:23:28,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:28,834 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:23:28,834 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 [2022-11-16 12:23:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:28,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:29,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:29,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131160635] [2022-11-16 12:23:29,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131160635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:29,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:23:29,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-16 12:23:29,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233203236] [2022-11-16 12:23:29,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:29,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:23:29,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:29,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:23:29,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:23:29,242 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) [2022-11-16 12:23:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:29,953 INFO L93 Difference]: Finished difference Result 593 states and 1499 transitions. [2022-11-16 12:23:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:23:29,954 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 [2022-11-16 12:23:29,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:29,958 INFO L225 Difference]: With dead ends: 593 [2022-11-16 12:23:29,958 INFO L226 Difference]: Without dead ends: 593 [2022-11-16 12:23:29,959 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 [2022-11-16 12:23:29,964 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:29,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 8 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:23:29,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-11-16 12:23:29,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 203. [2022-11-16 12:23:29,982 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) [2022-11-16 12:23:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 509 transitions. [2022-11-16 12:23:29,983 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 509 transitions. Word has length 3 [2022-11-16 12:23:29,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:29,984 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 509 transitions. [2022-11-16 12:23:29,984 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) [2022-11-16 12:23:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 509 transitions. [2022-11-16 12:23:29,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:23:29,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:29,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:23:30,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:30,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:30,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:30,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:30,210 INFO L85 PathProgramCache]: Analyzing trace with hash 19776105, now seen corresponding path program 1 times [2022-11-16 12:23:30,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:30,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196935701] [2022-11-16 12:23:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:30,211 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 [2022-11-16 12:23:30,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:30,212 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:30,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:30,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:23:30,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:30,366 INFO L321 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2022-11-16 12:23:30,366 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 [2022-11-16 12:23:30,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:30,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:30,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:30,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196935701] [2022-11-16 12:23:30,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196935701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:30,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:30,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:23:30,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624221878] [2022-11-16 12:23:30,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:30,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:30,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:30,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:30,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:30,396 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) [2022-11-16 12:23:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:30,554 INFO L93 Difference]: Finished difference Result 191 states and 485 transitions. [2022-11-16 12:23:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:30,555 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 [2022-11-16 12:23:30,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:30,557 INFO L225 Difference]: With dead ends: 191 [2022-11-16 12:23:30,557 INFO L226 Difference]: Without dead ends: 191 [2022-11-16 12:23:30,557 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 [2022-11-16 12:23:30,558 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:30,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:23:30,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-16 12:23:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2022-11-16 12:23:30,566 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) [2022-11-16 12:23:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 485 transitions. [2022-11-16 12:23:30,567 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 485 transitions. Word has length 4 [2022-11-16 12:23:30,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:30,568 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 485 transitions. [2022-11-16 12:23:30,568 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) [2022-11-16 12:23:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 485 transitions. [2022-11-16 12:23:30,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:23:30,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:30,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:23:30,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:30,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:30,782 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash 19776106, now seen corresponding path program 1 times [2022-11-16 12:23:30,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:30,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139882783] [2022-11-16 12:23:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:30,784 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 [2022-11-16 12:23:30,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:30,785 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:30,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:30,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:23:30,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:30,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:30,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:30,942 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:23:30,942 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 [2022-11-16 12:23:30,952 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 [2022-11-16 12:23:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:30,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:30,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:30,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139882783] [2022-11-16 12:23:30,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139882783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:30,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:30,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:23:30,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532320300] [2022-11-16 12:23:30,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:30,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:30,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:30,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:30,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:30,989 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) [2022-11-16 12:23:31,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:31,153 INFO L93 Difference]: Finished difference Result 179 states and 461 transitions. [2022-11-16 12:23:31,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:31,153 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 [2022-11-16 12:23:31,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:31,155 INFO L225 Difference]: With dead ends: 179 [2022-11-16 12:23:31,155 INFO L226 Difference]: Without dead ends: 179 [2022-11-16 12:23:31,155 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 [2022-11-16 12:23:31,156 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:31,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:23:31,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-16 12:23:31,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-16 12:23:31,165 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) [2022-11-16 12:23:31,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 461 transitions. [2022-11-16 12:23:31,167 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 461 transitions. Word has length 4 [2022-11-16 12:23:31,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:31,167 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 461 transitions. [2022-11-16 12:23:31,168 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) [2022-11-16 12:23:31,168 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 461 transitions. [2022-11-16 12:23:31,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:23:31,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:31,169 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-16 12:23:31,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:31,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:31,382 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:31,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:31,383 INFO L85 PathProgramCache]: Analyzing trace with hash 612479132, now seen corresponding path program 2 times [2022-11-16 12:23:31,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:31,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848989618] [2022-11-16 12:23:31,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:23:31,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:31,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:31,385 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:31,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:31,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:23:31,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:31,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:23:31,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:31,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:31,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:31,573 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:23:31,574 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 [2022-11-16 12:23:31,592 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 [2022-11-16 12:23:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:23:31,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:31,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:31,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848989618] [2022-11-16 12:23:31,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848989618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:31,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:31,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:23:31,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601357208] [2022-11-16 12:23:31,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:31,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:31,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:31,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:31,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:31,706 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) [2022-11-16 12:23:31,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:31,811 INFO L93 Difference]: Finished difference Result 178 states and 459 transitions. [2022-11-16 12:23:31,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:31,811 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 [2022-11-16 12:23:31,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:31,813 INFO L225 Difference]: With dead ends: 178 [2022-11-16 12:23:31,813 INFO L226 Difference]: Without dead ends: 178 [2022-11-16 12:23:31,813 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 [2022-11-16 12:23:31,814 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 [2022-11-16 12:23:31,815 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] [2022-11-16 12:23:31,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-16 12:23:31,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-11-16 12:23:31,824 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) [2022-11-16 12:23:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 459 transitions. [2022-11-16 12:23:31,826 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 459 transitions. Word has length 5 [2022-11-16 12:23:31,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:31,827 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 459 transitions. [2022-11-16 12:23:31,827 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) [2022-11-16 12:23:31,827 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 459 transitions. [2022-11-16 12:23:31,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:23:31,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:31,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:23:31,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:32,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:32,051 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:32,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash 613055227, now seen corresponding path program 1 times [2022-11-16 12:23:32,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:32,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457477332] [2022-11-16 12:23:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:32,052 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 [2022-11-16 12:23:32,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:32,053 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:32,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:32,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:23:32,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:32,193 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-16 12:23:32,193 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 [2022-11-16 12:23:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:32,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:32,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:32,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457477332] [2022-11-16 12:23:32,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457477332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:32,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:32,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:23:32,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909389760] [2022-11-16 12:23:32,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:32,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:32,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:32,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:32,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:32,227 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) [2022-11-16 12:23:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:32,404 INFO L93 Difference]: Finished difference Result 130 states and 330 transitions. [2022-11-16 12:23:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:23:32,405 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 [2022-11-16 12:23:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:32,406 INFO L225 Difference]: With dead ends: 130 [2022-11-16 12:23:32,407 INFO L226 Difference]: Without dead ends: 130 [2022-11-16 12:23:32,407 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 [2022-11-16 12:23:32,408 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:32,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:23:32,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-16 12:23:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-16 12:23:32,414 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) [2022-11-16 12:23:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 330 transitions. [2022-11-16 12:23:32,428 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 330 transitions. Word has length 5 [2022-11-16 12:23:32,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:32,429 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 330 transitions. [2022-11-16 12:23:32,429 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) [2022-11-16 12:23:32,429 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 330 transitions. [2022-11-16 12:23:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:23:32,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:32,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:23:32,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:32,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:32,650 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:32,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:32,651 INFO L85 PathProgramCache]: Analyzing trace with hash 613055228, now seen corresponding path program 1 times [2022-11-16 12:23:32,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:32,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370440248] [2022-11-16 12:23:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:32,652 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 [2022-11-16 12:23:32,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:32,654 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:32,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:32,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:23:32,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:32,838 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:23:32,838 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 [2022-11-16 12:23:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:32,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:32,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:32,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370440248] [2022-11-16 12:23:32,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370440248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:32,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:32,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:32,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663206003] [2022-11-16 12:23:32,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:32,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:23:32,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:32,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:23:32,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:23:32,959 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) [2022-11-16 12:23:33,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:33,342 INFO L93 Difference]: Finished difference Result 208 states and 529 transitions. [2022-11-16 12:23:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:33,343 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 [2022-11-16 12:23:33,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:33,345 INFO L225 Difference]: With dead ends: 208 [2022-11-16 12:23:33,345 INFO L226 Difference]: Without dead ends: 208 [2022-11-16 12:23:33,345 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 [2022-11-16 12:23:33,346 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 66 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-11-16 12:23:33,346 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] [2022-11-16 12:23:33,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-16 12:23:33,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 152. [2022-11-16 12:23:33,354 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) [2022-11-16 12:23:33,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 411 transitions. [2022-11-16 12:23:33,356 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 411 transitions. Word has length 5 [2022-11-16 12:23:33,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:33,356 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 411 transitions. [2022-11-16 12:23:33,356 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) [2022-11-16 12:23:33,357 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 411 transitions. [2022-11-16 12:23:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:23:33,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:33,358 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-16 12:23:33,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:33,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:33,572 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:33,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:33,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1806983637, now seen corresponding path program 2 times [2022-11-16 12:23:33,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:33,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026987938] [2022-11-16 12:23:33,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:23:33,574 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 [2022-11-16 12:23:33,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:33,575 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:33,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:33,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:23:33,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:33,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:23:33,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:33,795 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:23:33,796 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 [2022-11-16 12:23:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:34,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:35,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:35,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026987938] [2022-11-16 12:23:35,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026987938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:35,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:23:35,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-16 12:23:35,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431686491] [2022-11-16 12:23:35,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:35,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:23:35,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:35,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:23:35,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:23:35,193 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) [2022-11-16 12:23:40,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:40,621 INFO L93 Difference]: Finished difference Result 1463 states and 4014 transitions. [2022-11-16 12:23:40,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:23:40,623 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 [2022-11-16 12:23:40,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:40,634 INFO L225 Difference]: With dead ends: 1463 [2022-11-16 12:23:40,635 INFO L226 Difference]: Without dead ends: 1463 [2022-11-16 12:23:40,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:23:40,636 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 588 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:40,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 58 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-16 12:23:40,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-11-16 12:23:40,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 158. [2022-11-16 12:23:40,659 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) [2022-11-16 12:23:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 423 transitions. [2022-11-16 12:23:40,661 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 423 transitions. Word has length 6 [2022-11-16 12:23:40,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:40,661 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 423 transitions. [2022-11-16 12:23:40,661 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) [2022-11-16 12:23:40,662 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 423 transitions. [2022-11-16 12:23:40,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:23:40,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:40,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:23:40,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:40,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:40,877 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:40,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1824984602, now seen corresponding path program 1 times [2022-11-16 12:23:40,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:40,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993922028] [2022-11-16 12:23:40,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:40,878 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 [2022-11-16 12:23:40,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:40,879 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:40,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:40,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:23:40,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:41,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:41,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:41,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993922028] [2022-11-16 12:23:41,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993922028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:41,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:41,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:23:41,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966528571] [2022-11-16 12:23:41,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:41,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:41,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:41,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:41,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:41,021 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) [2022-11-16 12:23:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:41,155 INFO L93 Difference]: Finished difference Result 128 states and 328 transitions. [2022-11-16 12:23:41,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:41,156 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 [2022-11-16 12:23:41,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:41,156 INFO L225 Difference]: With dead ends: 128 [2022-11-16 12:23:41,156 INFO L226 Difference]: Without dead ends: 128 [2022-11-16 12:23:41,157 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 [2022-11-16 12:23:41,159 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 [2022-11-16 12:23:41,159 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] [2022-11-16 12:23:41,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-16 12:23:41,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-11-16 12:23:41,164 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) [2022-11-16 12:23:41,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 328 transitions. [2022-11-16 12:23:41,165 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 328 transitions. Word has length 6 [2022-11-16 12:23:41,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:41,166 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 328 transitions. [2022-11-16 12:23:41,166 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) [2022-11-16 12:23:41,166 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 328 transitions. [2022-11-16 12:23:41,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:23:41,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:41,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:23:41,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:23:41,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:41,381 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:41,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1824984601, now seen corresponding path program 1 times [2022-11-16 12:23:41,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:41,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751082569] [2022-11-16 12:23:41,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:41,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:41,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:41,385 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:41,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:41,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:23:41,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:41,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:41,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:41,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751082569] [2022-11-16 12:23:41,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751082569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:41,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:41,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:23:41,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359784138] [2022-11-16 12:23:41,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:41,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:41,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:41,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:41,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:41,546 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) [2022-11-16 12:23:41,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:41,678 INFO L93 Difference]: Finished difference Result 98 states and 233 transitions. [2022-11-16 12:23:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:41,679 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 [2022-11-16 12:23:41,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:41,680 INFO L225 Difference]: With dead ends: 98 [2022-11-16 12:23:41,680 INFO L226 Difference]: Without dead ends: 98 [2022-11-16 12:23:41,680 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 [2022-11-16 12:23:41,681 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 [2022-11-16 12:23:41,681 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] [2022-11-16 12:23:41,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-16 12:23:41,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-16 12:23:41,686 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) [2022-11-16 12:23:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 233 transitions. [2022-11-16 12:23:41,687 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 233 transitions. Word has length 6 [2022-11-16 12:23:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:41,687 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 233 transitions. [2022-11-16 12:23:41,688 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) [2022-11-16 12:23:41,688 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 233 transitions. [2022-11-16 12:23:41,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:23:41,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:41,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:41,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:41,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:41,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:41,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:41,897 INFO L85 PathProgramCache]: Analyzing trace with hash 735574089, now seen corresponding path program 1 times [2022-11-16 12:23:41,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:41,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326166677] [2022-11-16 12:23:41,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:41,897 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 [2022-11-16 12:23:41,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:41,900 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:41,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:23:42,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:42,098 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:23:42,098 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 [2022-11-16 12:23:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:42,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:42,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:42,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326166677] [2022-11-16 12:23:42,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326166677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:42,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:42,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:23:42,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406866455] [2022-11-16 12:23:42,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:42,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:23:42,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:42,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:23:42,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:23:42,280 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) [2022-11-16 12:23:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:42,493 INFO L93 Difference]: Finished difference Result 101 states and 238 transitions. [2022-11-16 12:23:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:23:42,494 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 [2022-11-16 12:23:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:42,495 INFO L225 Difference]: With dead ends: 101 [2022-11-16 12:23:42,496 INFO L226 Difference]: Without dead ends: 101 [2022-11-16 12:23:42,496 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 [2022-11-16 12:23:42,497 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:42,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 22 Unchecked, 0.2s Time] [2022-11-16 12:23:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-16 12:23:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-16 12:23:42,501 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) [2022-11-16 12:23:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 238 transitions. [2022-11-16 12:23:42,502 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 238 transitions. Word has length 7 [2022-11-16 12:23:42,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:42,503 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 238 transitions. [2022-11-16 12:23:42,503 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) [2022-11-16 12:23:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 238 transitions. [2022-11-16 12:23:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:23:42,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:42,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:42,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:42,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:42,719 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:42,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:42,720 INFO L85 PathProgramCache]: Analyzing trace with hash 739945429, now seen corresponding path program 1 times [2022-11-16 12:23:42,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:42,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574057965] [2022-11-16 12:23:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:42,721 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 [2022-11-16 12:23:42,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:42,723 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:42,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:23:42,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:42,947 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:23:42,948 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 [2022-11-16 12:23:43,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:43,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:43,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:43,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574057965] [2022-11-16 12:23:43,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574057965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:43,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:43,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:43,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933868671] [2022-11-16 12:23:43,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:43,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:23:43,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:43,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:23:43,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:23:43,110 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) [2022-11-16 12:23:43,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:43,473 INFO L93 Difference]: Finished difference Result 145 states and 348 transitions. [2022-11-16 12:23:43,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:43,474 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 [2022-11-16 12:23:43,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:43,475 INFO L225 Difference]: With dead ends: 145 [2022-11-16 12:23:43,475 INFO L226 Difference]: Without dead ends: 145 [2022-11-16 12:23:43,475 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 [2022-11-16 12:23:43,476 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 54 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:43,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:23:43,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-16 12:23:43,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 115. [2022-11-16 12:23:43,482 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) [2022-11-16 12:23:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions. [2022-11-16 12:23:43,483 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 7 [2022-11-16 12:23:43,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:43,484 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 288 transitions. [2022-11-16 12:23:43,484 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) [2022-11-16 12:23:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions. [2022-11-16 12:23:43,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:23:43,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:43,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:43,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:43,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:43,698 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:43,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:43,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1898257409, now seen corresponding path program 1 times [2022-11-16 12:23:43,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:43,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77370768] [2022-11-16 12:23:43,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:43,700 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 [2022-11-16 12:23:43,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:43,702 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:43,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:43,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:23:43,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:43,933 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:23:43,934 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 [2022-11-16 12:23:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:44,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:45,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:45,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77370768] [2022-11-16 12:23:45,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77370768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:45,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:23:45,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-16 12:23:45,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579338162] [2022-11-16 12:23:45,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:45,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:23:45,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:45,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:23:45,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:23:45,009 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) [2022-11-16 12:23:47,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:47,362 INFO L93 Difference]: Finished difference Result 309 states and 746 transitions. [2022-11-16 12:23:47,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:23:47,363 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 [2022-11-16 12:23:47,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:47,365 INFO L225 Difference]: With dead ends: 309 [2022-11-16 12:23:47,365 INFO L226 Difference]: Without dead ends: 309 [2022-11-16 12:23:47,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:23:47,366 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 247 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:47,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 14 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 12:23:47,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-16 12:23:47,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 207. [2022-11-16 12:23:47,375 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) [2022-11-16 12:23:47,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 566 transitions. [2022-11-16 12:23:47,377 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 566 transitions. Word has length 8 [2022-11-16 12:23:47,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:47,377 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 566 transitions. [2022-11-16 12:23:47,377 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) [2022-11-16 12:23:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 566 transitions. [2022-11-16 12:23:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:23:47,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:47,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:47,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:47,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:47,594 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:47,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:47,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1876994831, now seen corresponding path program 1 times [2022-11-16 12:23:47,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:47,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345689230] [2022-11-16 12:23:47,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:47,595 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 [2022-11-16 12:23:47,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:47,597 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:47,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:47,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:23:47,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:47,827 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:23:47,828 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 [2022-11-16 12:23:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:48,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:48,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:48,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345689230] [2022-11-16 12:23:48,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345689230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:48,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:48,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:23:48,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145653418] [2022-11-16 12:23:48,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:48,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:23:48,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:48,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:23:48,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:23:48,034 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) [2022-11-16 12:23:48,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:48,221 INFO L93 Difference]: Finished difference Result 213 states and 585 transitions. [2022-11-16 12:23:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:23:48,222 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 [2022-11-16 12:23:48,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:48,224 INFO L225 Difference]: With dead ends: 213 [2022-11-16 12:23:48,224 INFO L226 Difference]: Without dead ends: 213 [2022-11-16 12:23:48,224 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 [2022-11-16 12:23:48,225 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 [2022-11-16 12:23:48,225 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] [2022-11-16 12:23:48,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-16 12:23:48,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-11-16 12:23:48,233 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) [2022-11-16 12:23:48,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 585 transitions. [2022-11-16 12:23:48,234 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 585 transitions. Word has length 9 [2022-11-16 12:23:48,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:48,235 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 585 transitions. [2022-11-16 12:23:48,235 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) [2022-11-16 12:23:48,235 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 585 transitions. [2022-11-16 12:23:48,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:23:48,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:48,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:48,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:48,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:48,452 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:48,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:48,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1229821271, now seen corresponding path program 1 times [2022-11-16 12:23:48,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:48,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483282029] [2022-11-16 12:23:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:48,454 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 [2022-11-16 12:23:48,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:48,455 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:48,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:23:48,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:48,693 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:23:48,693 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 [2022-11-16 12:23:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:48,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:49,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:49,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483282029] [2022-11-16 12:23:49,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483282029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:49,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:23:49,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-16 12:23:49,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358008152] [2022-11-16 12:23:49,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:49,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:23:49,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:49,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:23:49,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:23:49,888 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) [2022-11-16 12:23:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:52,119 INFO L93 Difference]: Finished difference Result 515 states and 1381 transitions. [2022-11-16 12:23:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:23:52,121 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 [2022-11-16 12:23:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:52,124 INFO L225 Difference]: With dead ends: 515 [2022-11-16 12:23:52,124 INFO L226 Difference]: Without dead ends: 515 [2022-11-16 12:23:52,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:23:52,125 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 195 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:52,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 17 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 12:23:52,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-11-16 12:23:52,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 403. [2022-11-16 12:23:52,137 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) [2022-11-16 12:23:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1191 transitions. [2022-11-16 12:23:52,139 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1191 transitions. Word has length 10 [2022-11-16 12:23:52,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:52,139 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 1191 transitions. [2022-11-16 12:23:52,140 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) [2022-11-16 12:23:52,140 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1191 transitions. [2022-11-16 12:23:52,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:23:52,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:52,141 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-16 12:23:52,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:52,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:23:52,356 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:23:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1426300117, now seen corresponding path program 3 times [2022-11-16 12:23:52,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:23:52,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270666735] [2022-11-16 12:23:52,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:23:52,357 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 [2022-11-16 12:23:52,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:23:52,359 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:23:52,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:23:52,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 12:23:52,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:52,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:23:52,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:52,716 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:23:52,717 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 [2022-11-16 12:23:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:53,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:56,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:23:56,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270666735] [2022-11-16 12:23:56,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270666735] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:56,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:23:56,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-16 12:23:56,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969778714] [2022-11-16 12:23:56,945 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:56,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:23:56,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:23:56,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:23:56,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:23:56,947 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) [2022-11-16 12:24:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:23,725 INFO L93 Difference]: Finished difference Result 8370 states and 25065 transitions. [2022-11-16 12:24:23,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:24:23,727 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 [2022-11-16 12:24:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:23,805 INFO L225 Difference]: With dead ends: 8370 [2022-11-16 12:24:23,806 INFO L226 Difference]: Without dead ends: 8370 [2022-11-16 12:24:23,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:24:23,807 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2603 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s 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, 10.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:23,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2603 Valid, 262 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-11-16 12:24:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2022-11-16 12:24:23,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 415. [2022-11-16 12:24:23,940 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) [2022-11-16 12:24:23,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 1215 transitions. [2022-11-16 12:24:23,943 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 1215 transitions. Word has length 12 [2022-11-16 12:24:23,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:23,943 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 1215 transitions. [2022-11-16 12:24:23,944 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) [2022-11-16 12:24:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 1215 transitions. [2022-11-16 12:24:23,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:24:23,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:23,945 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:23,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:24:24,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:24,159 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:24:24,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash -652448152, now seen corresponding path program 2 times [2022-11-16 12:24:24,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:24,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076173419] [2022-11-16 12:24:24,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:24:24,161 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 [2022-11-16 12:24:24,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:24,162 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:24:24,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:24:24,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:24:24,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:24,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:24:24,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:24,413 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:24:24,414 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 [2022-11-16 12:24:24,929 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:24,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:27,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:27,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076173419] [2022-11-16 12:24:27,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076173419] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:27,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:24:27,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-16 12:24:27,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126469989] [2022-11-16 12:24:27,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:27,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:24:27,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:27,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:24:27,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:24:27,046 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) [2022-11-16 12:24:41,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:41,213 INFO L93 Difference]: Finished difference Result 2084 states and 5663 transitions. [2022-11-16 12:24:41,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:24:41,216 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 [2022-11-16 12:24:41,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:41,227 INFO L225 Difference]: With dead ends: 2084 [2022-11-16 12:24:41,227 INFO L226 Difference]: Without dead ends: 2084 [2022-11-16 12:24:41,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=275, Invalid=1285, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 12:24:41,229 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 378 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s 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, 8.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:41,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 108 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 902 Invalid, 0 Unknown, 378 Unchecked, 8.8s Time] [2022-11-16 12:24:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2022-11-16 12:24:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 575. [2022-11-16 12:24:41,262 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) [2022-11-16 12:24:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1706 transitions. [2022-11-16 12:24:41,265 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1706 transitions. Word has length 14 [2022-11-16 12:24:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:41,265 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 1706 transitions. [2022-11-16 12:24:41,265 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) [2022-11-16 12:24:41,266 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1706 transitions. [2022-11-16 12:24:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:24:41,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:41,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:41,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:24:41,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:41,482 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:24:41,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:41,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1967737254, now seen corresponding path program 1 times [2022-11-16 12:24:41,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:41,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958872471] [2022-11-16 12:24:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:41,483 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 [2022-11-16 12:24:41,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:41,485 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:24:41,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:24:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:41,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:24:41,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:41,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:41,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:41,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958872471] [2022-11-16 12:24:41,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958872471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:41,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:41,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:24:41,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804502798] [2022-11-16 12:24:41,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:41,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:24:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:24:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:24:41,672 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) [2022-11-16 12:24:41,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:41,849 INFO L93 Difference]: Finished difference Result 615 states and 1783 transitions. [2022-11-16 12:24:41,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:24:41,851 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 [2022-11-16 12:24:41,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:41,855 INFO L225 Difference]: With dead ends: 615 [2022-11-16 12:24:41,855 INFO L226 Difference]: Without dead ends: 610 [2022-11-16 12:24:41,856 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 [2022-11-16 12:24:41,856 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:41,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:24:41,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-11-16 12:24:41,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 585. [2022-11-16 12:24:41,874 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) [2022-11-16 12:24:41,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1721 transitions. [2022-11-16 12:24:41,880 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1721 transitions. Word has length 14 [2022-11-16 12:24:41,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:41,880 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 1721 transitions. [2022-11-16 12:24:41,881 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) [2022-11-16 12:24:41,883 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1721 transitions. [2022-11-16 12:24:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:24:41,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:41,885 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:41,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:24:42,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:42,100 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:24:42,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1407935255, now seen corresponding path program 1 times [2022-11-16 12:24:42,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:42,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451135408] [2022-11-16 12:24:42,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:42,102 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 [2022-11-16 12:24:42,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:42,104 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:24:42,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:24:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:42,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:24:42,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:42,421 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:24:42,421 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 [2022-11-16 12:24:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:42,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:44,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:44,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451135408] [2022-11-16 12:24:44,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451135408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:44,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:24:44,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-16 12:24:44,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828945830] [2022-11-16 12:24:44,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:44,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:24:44,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:44,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:24:44,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:24:44,658 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) [2022-11-16 12:24:58,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:58,039 INFO L93 Difference]: Finished difference Result 2118 states and 5757 transitions. [2022-11-16 12:24:58,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:24:58,042 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 [2022-11-16 12:24:58,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:58,049 INFO L225 Difference]: With dead ends: 2118 [2022-11-16 12:24:58,050 INFO L226 Difference]: Without dead ends: 2118 [2022-11-16 12:24:58,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=271, Invalid=1289, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 12:24:58,051 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 649 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s 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, 7.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:58,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 116 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 933 Invalid, 0 Unknown, 385 Unchecked, 7.3s Time] [2022-11-16 12:24:58,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2022-11-16 12:24:58,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 582. [2022-11-16 12:24:58,078 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) [2022-11-16 12:24:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1714 transitions. [2022-11-16 12:24:58,080 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1714 transitions. Word has length 15 [2022-11-16 12:24:58,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:58,081 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 1714 transitions. [2022-11-16 12:24:58,081 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) [2022-11-16 12:24:58,081 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1714 transitions. [2022-11-16 12:24:58,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:24:58,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:58,083 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:58,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:24:58,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:58,296 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:24:58,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash 663373507, now seen corresponding path program 2 times [2022-11-16 12:24:58,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:58,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564876647] [2022-11-16 12:24:58,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:24:58,297 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 [2022-11-16 12:24:58,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:58,298 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:24:58,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:24:58,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:24:58,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:58,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:24:58,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:58,582 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:24:58,583 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 [2022-11-16 12:24:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:59,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:01,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:01,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564876647] [2022-11-16 12:25:01,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564876647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:01,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:01,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-16 12:25:01,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333187365] [2022-11-16 12:25:01,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:01,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:25:01,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:01,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:25:01,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:25:01,036 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) [2022-11-16 12:25:15,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:15,439 INFO L93 Difference]: Finished difference Result 2372 states and 6609 transitions. [2022-11-16 12:25:15,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 12:25:15,442 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 [2022-11-16 12:25:15,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:15,451 INFO L225 Difference]: With dead ends: 2372 [2022-11-16 12:25:15,451 INFO L226 Difference]: Without dead ends: 2372 [2022-11-16 12:25:15,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=273, Invalid=1449, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 12:25:15,453 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 345 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s 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, 7.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:15,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 111 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 989 Invalid, 0 Unknown, 215 Unchecked, 7.8s Time] [2022-11-16 12:25:15,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2022-11-16 12:25:15,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 583. [2022-11-16 12:25:15,486 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) [2022-11-16 12:25:15,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1716 transitions. [2022-11-16 12:25:15,489 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1716 transitions. Word has length 15 [2022-11-16 12:25:15,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:15,489 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 1716 transitions. [2022-11-16 12:25:15,489 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) [2022-11-16 12:25:15,490 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1716 transitions. [2022-11-16 12:25:15,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:25:15,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:15,492 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:15,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:25:15,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:15,700 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:25:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:15,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1887086578, now seen corresponding path program 1 times [2022-11-16 12:25:15,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:25:15,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525774644] [2022-11-16 12:25:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:15,701 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 [2022-11-16 12:25:15,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:25:15,702 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:25:15,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:25:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:15,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:25:15,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:15,981 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:25:15,982 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 [2022-11-16 12:25:16,523 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:16,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:18,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:18,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525774644] [2022-11-16 12:25:18,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525774644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:18,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:18,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-16 12:25:18,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030287771] [2022-11-16 12:25:18,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:18,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:25:18,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:25:18,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:25:18,511 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) [2022-11-16 12:25:37,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:37,056 INFO L93 Difference]: Finished difference Result 2223 states and 6010 transitions. [2022-11-16 12:25:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 12:25:37,058 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 [2022-11-16 12:25:37,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:37,063 INFO L225 Difference]: With dead ends: 2223 [2022-11-16 12:25:37,063 INFO L226 Difference]: Without dead ends: 2223 [2022-11-16 12:25:37,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=321, Invalid=1571, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 12:25:37,064 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 507 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s 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, 9.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:37,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 127 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1096 Invalid, 0 Unknown, 177 Unchecked, 9.8s Time] [2022-11-16 12:25:37,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2022-11-16 12:25:37,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 754. [2022-11-16 12:25:37,094 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) [2022-11-16 12:25:37,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2306 transitions. [2022-11-16 12:25:37,110 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2306 transitions. Word has length 16 [2022-11-16 12:25:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:37,110 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 2306 transitions. [2022-11-16 12:25:37,110 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) [2022-11-16 12:25:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2306 transitions. [2022-11-16 12:25:37,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:25:37,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:37,113 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:37,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:25:37,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:37,327 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:25:37,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:37,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1028967939, now seen corresponding path program 2 times [2022-11-16 12:25:37,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:25:37,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098132099] [2022-11-16 12:25:37,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:25:37,328 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 [2022-11-16 12:25:37,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:25:37,330 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:25:37,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:25:37,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:25:37,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:25:37,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:25:37,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:37,606 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:25:37,607 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 [2022-11-16 12:25:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:38,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:39,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:39,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098132099] [2022-11-16 12:25:39,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098132099] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:39,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:39,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-16 12:25:39,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360003801] [2022-11-16 12:25:39,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:39,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:25:39,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:39,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:25:39,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:25:39,839 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) [2022-11-16 12:25:55,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:55,319 INFO L93 Difference]: Finished difference Result 1984 states and 5597 transitions. [2022-11-16 12:25:55,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:25:55,322 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 [2022-11-16 12:25:55,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:55,330 INFO L225 Difference]: With dead ends: 1984 [2022-11-16 12:25:55,330 INFO L226 Difference]: Without dead ends: 1984 [2022-11-16 12:25:55,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=296, Invalid=1264, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 12:25:55,332 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 355 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s 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, 7.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:55,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 120 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 920 Invalid, 0 Unknown, 329 Unchecked, 7.5s Time] [2022-11-16 12:25:55,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2022-11-16 12:25:55,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 958. [2022-11-16 12:25:55,389 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) [2022-11-16 12:25:55,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 2944 transitions. [2022-11-16 12:25:55,394 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 2944 transitions. Word has length 16 [2022-11-16 12:25:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:55,394 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 2944 transitions. [2022-11-16 12:25:55,394 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) [2022-11-16 12:25:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 2944 transitions. [2022-11-16 12:25:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:25:55,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:55,397 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:55,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:25:55,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:55,612 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:25:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1311094322, now seen corresponding path program 2 times [2022-11-16 12:25:55,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:25:55,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733365162] [2022-11-16 12:25:55,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:25:55,613 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 [2022-11-16 12:25:55,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:25:55,614 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:25:55,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:25:55,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:25:55,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:25:55,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:25:55,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:55,875 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:25:55,875 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 [2022-11-16 12:25:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:56,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:58,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:58,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733365162] [2022-11-16 12:25:58,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733365162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:58,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:58,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-16 12:25:58,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578786991] [2022-11-16 12:25:58,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:58,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:25:58,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:58,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:25:58,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:25:58,194 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) [2022-11-16 12:26:05,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:05,738 INFO L93 Difference]: Finished difference Result 1750 states and 5247 transitions. [2022-11-16 12:26:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:26:05,740 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 [2022-11-16 12:26:05,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:05,747 INFO L225 Difference]: With dead ends: 1750 [2022-11-16 12:26:05,747 INFO L226 Difference]: Without dead ends: 1750 [2022-11-16 12:26:05,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 12:26:05,749 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 96 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s 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, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:26:05,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 149 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 532 Invalid, 0 Unknown, 289 Unchecked, 4.1s Time] [2022-11-16 12:26:05,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2022-11-16 12:26:05,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 968. [2022-11-16 12:26:05,781 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) [2022-11-16 12:26:05,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 2962 transitions. [2022-11-16 12:26:05,785 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 2962 transitions. Word has length 16 [2022-11-16 12:26:05,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:05,786 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 2962 transitions. [2022-11-16 12:26:05,786 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) [2022-11-16 12:26:05,786 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2962 transitions. [2022-11-16 12:26:05,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:26:05,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:05,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:05,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:26:06,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:06,005 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:26:06,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:06,006 INFO L85 PathProgramCache]: Analyzing trace with hash 101940584, now seen corresponding path program 1 times [2022-11-16 12:26:06,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:26:06,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133302775] [2022-11-16 12:26:06,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:06,006 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 [2022-11-16 12:26:06,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:26:06,009 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:26:06,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:26:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:06,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:26:06,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:06,295 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:26:06,295 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 [2022-11-16 12:26:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:06,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:06,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:26:06,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133302775] [2022-11-16 12:26:06,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133302775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:06,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:06,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:26:06,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091972493] [2022-11-16 12:26:06,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:06,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:26:06,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:26:06,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:26:06,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:26:06,602 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) [2022-11-16 12:26:07,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:07,236 INFO L93 Difference]: Finished difference Result 982 states and 2979 transitions. [2022-11-16 12:26:07,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:26:07,237 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 [2022-11-16 12:26:07,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:07,240 INFO L225 Difference]: With dead ends: 982 [2022-11-16 12:26:07,240 INFO L226 Difference]: Without dead ends: 972 [2022-11-16 12:26:07,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:26:07,241 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:26:07,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 12 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 52 Unchecked, 0.3s Time] [2022-11-16 12:26:07,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-11-16 12:26:07,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2022-11-16 12:26:07,277 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) [2022-11-16 12:26:07,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 2961 transitions. [2022-11-16 12:26:07,281 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 2961 transitions. Word has length 16 [2022-11-16 12:26:07,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:07,282 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 2961 transitions. [2022-11-16 12:26:07,282 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) [2022-11-16 12:26:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 2961 transitions. [2022-11-16 12:26:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:26:07,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:07,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:07,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-16 12:26:07,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:07,498 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:26:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash -904730997, now seen corresponding path program 1 times [2022-11-16 12:26:07,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:26:07,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749756585] [2022-11-16 12:26:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:07,499 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 [2022-11-16 12:26:07,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:26:07,500 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:26:07,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:26:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:07,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:26:07,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:07,716 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:26:07,716 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 [2022-11-16 12:26:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:07,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:07,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:26:07,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749756585] [2022-11-16 12:26:07,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749756585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:07,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:07,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:26:07,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381032998] [2022-11-16 12:26:07,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:07,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:26:07,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:26:07,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:26:07,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:26:07,974 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) [2022-11-16 12:26:08,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:08,420 INFO L93 Difference]: Finished difference Result 980 states and 2969 transitions. [2022-11-16 12:26:08,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:26:08,421 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 [2022-11-16 12:26:08,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:08,424 INFO L225 Difference]: With dead ends: 980 [2022-11-16 12:26:08,424 INFO L226 Difference]: Without dead ends: 959 [2022-11-16 12:26:08,424 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 [2022-11-16 12:26:08,425 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 [2022-11-16 12:26:08,425 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] [2022-11-16 12:26:08,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-11-16 12:26:08,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2022-11-16 12:26:08,445 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) [2022-11-16 12:26:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 2937 transitions. [2022-11-16 12:26:08,449 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 2937 transitions. Word has length 16 [2022-11-16 12:26:08,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:08,449 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 2937 transitions. [2022-11-16 12:26:08,449 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) [2022-11-16 12:26:08,449 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 2937 transitions. [2022-11-16 12:26:08,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:26:08,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:08,452 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2022-11-16 12:26:08,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:26:08,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:08,664 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:26:08,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:08,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2070389424, now seen corresponding path program 3 times [2022-11-16 12:26:08,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:26:08,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342418405] [2022-11-16 12:26:08,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:26:08,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:08,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:26:08,667 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:26:08,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:26:09,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 12:26:09,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:26:09,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 12:26:09,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:09,137 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:26:09,137 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 [2022-11-16 12:26:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:09,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:13,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:26:13,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342418405] [2022-11-16 12:26:13,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342418405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:13,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:26:13,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2022-11-16 12:26:13,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701801327] [2022-11-16 12:26:13,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:13,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:26:13,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:26:13,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:26:13,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:26:13,614 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) [2022-11-16 12:26:48,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:48,593 INFO L93 Difference]: Finished difference Result 3724 states and 9892 transitions. [2022-11-16 12:26:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-16 12:26:48,596 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 [2022-11-16 12:26:48,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:48,603 INFO L225 Difference]: With dead ends: 3724 [2022-11-16 12:26:48,604 INFO L226 Difference]: Without dead ends: 3724 [2022-11-16 12:26:48,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=1332, Invalid=3360, Unknown=0, NotChecked=0, Total=4692 [2022-11-16 12:26:48,606 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 1414 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 4122 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s 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, 18.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:26:48,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 374 Invalid, 4207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 4122 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2022-11-16 12:26:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2022-11-16 12:26:48,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 1035. [2022-11-16 12:26:48,677 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) [2022-11-16 12:26:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 3101 transitions. [2022-11-16 12:26:48,682 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 3101 transitions. Word has length 17 [2022-11-16 12:26:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:48,682 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 3101 transitions. [2022-11-16 12:26:48,682 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) [2022-11-16 12:26:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 3101 transitions. [2022-11-16 12:26:48,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:26:48,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:48,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:48,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:26:48,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:48,905 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:26:48,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:48,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1417478591, now seen corresponding path program 1 times [2022-11-16 12:26:48,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:26:48,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600456779] [2022-11-16 12:26:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:48,906 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 [2022-11-16 12:26:48,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:26:48,907 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:26:48,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:26:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:49,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:26:49,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:26:49,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:26:49,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:26:49,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600456779] [2022-11-16 12:26:49,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600456779] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:49,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:26:49,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-16 12:26:49,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192656747] [2022-11-16 12:26:49,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:49,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:26:49,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:26:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:26:49,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:26:49,362 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) [2022-11-16 12:26:50,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:50,010 INFO L93 Difference]: Finished difference Result 1320 states and 3812 transitions. [2022-11-16 12:26:50,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:26:50,012 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 [2022-11-16 12:26:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:50,015 INFO L225 Difference]: With dead ends: 1320 [2022-11-16 12:26:50,015 INFO L226 Difference]: Without dead ends: 1320 [2022-11-16 12:26:50,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:26:50,016 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 [2022-11-16 12:26:50,017 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] [2022-11-16 12:26:50,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-11-16 12:26:50,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 957. [2022-11-16 12:26:50,053 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) [2022-11-16 12:26:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 2832 transitions. [2022-11-16 12:26:50,057 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 2832 transitions. Word has length 17 [2022-11-16 12:26:50,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:50,058 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 2832 transitions. [2022-11-16 12:26:50,058 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) [2022-11-16 12:26:50,058 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 2832 transitions. [2022-11-16 12:26:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:26:50,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:50,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:50,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:50,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:50,275 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:26:50,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:50,275 INFO L85 PathProgramCache]: Analyzing trace with hash 111610032, now seen corresponding path program 1 times [2022-11-16 12:26:50,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:26:50,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132371442] [2022-11-16 12:26:50,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:50,276 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 [2022-11-16 12:26:50,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:26:50,277 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:26:50,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:26:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:50,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:26:50,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:26:50,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:26:50,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:26:50,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132371442] [2022-11-16 12:26:50,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132371442] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:26:50,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:26:50,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-11-16 12:26:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016262757] [2022-11-16 12:26:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:50,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:26:50,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:26:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:26:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:26:50,584 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) [2022-11-16 12:26:50,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:50,841 INFO L93 Difference]: Finished difference Result 961 states and 2746 transitions. [2022-11-16 12:26:50,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:26:50,842 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 [2022-11-16 12:26:50,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:50,844 INFO L225 Difference]: With dead ends: 961 [2022-11-16 12:26:50,844 INFO L226 Difference]: Without dead ends: 961 [2022-11-16 12:26:50,845 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 [2022-11-16 12:26:50,845 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 [2022-11-16 12:26:50,845 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] [2022-11-16 12:26:50,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-11-16 12:26:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 895. [2022-11-16 12:26:50,884 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) [2022-11-16 12:26:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2560 transitions. [2022-11-16 12:26:50,888 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 2560 transitions. Word has length 17 [2022-11-16 12:26:50,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:50,888 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 2560 transitions. [2022-11-16 12:26:50,888 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) [2022-11-16 12:26:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 2560 transitions. [2022-11-16 12:26:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:26:50,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:50,891 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:50,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:26:51,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:51,096 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:26:51,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:51,097 INFO L85 PathProgramCache]: Analyzing trace with hash 164850850, now seen corresponding path program 1 times [2022-11-16 12:26:51,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:26:51,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511446869] [2022-11-16 12:26:51,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:51,098 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 [2022-11-16 12:26:51,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:26:51,099 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:26:51,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:26:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:51,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:26:51,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:51,386 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:26:51,386 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 [2022-11-16 12:26:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:51,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:54,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:26:54,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511446869] [2022-11-16 12:26:54,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511446869] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:54,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:26:54,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-16 12:26:54,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970133548] [2022-11-16 12:26:54,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:54,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:26:54,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:26:54,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:26:54,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:26:54,022 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) [2022-11-16 12:26:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:56,116 INFO L93 Difference]: Finished difference Result 940 states and 2678 transitions. [2022-11-16 12:26:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:26:56,117 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 [2022-11-16 12:26:56,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:56,119 INFO L225 Difference]: With dead ends: 940 [2022-11-16 12:26:56,120 INFO L226 Difference]: Without dead ends: 940 [2022-11-16 12:26:56,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:26:56,120 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:26:56,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 68 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 30 Unchecked, 1.2s Time] [2022-11-16 12:26:56,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2022-11-16 12:26:56,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 904. [2022-11-16 12:26:56,135 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) [2022-11-16 12:26:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2578 transitions. [2022-11-16 12:26:56,137 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2578 transitions. Word has length 17 [2022-11-16 12:26:56,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:56,137 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 2578 transitions. [2022-11-16 12:26:56,137 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) [2022-11-16 12:26:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2578 transitions. [2022-11-16 12:26:56,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:26:56,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:56,139 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:56,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:26:56,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:56,351 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:26:56,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:56,351 INFO L85 PathProgramCache]: Analyzing trace with hash 282153766, now seen corresponding path program 2 times [2022-11-16 12:26:56,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:26:56,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675522058] [2022-11-16 12:26:56,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:26:56,352 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 [2022-11-16 12:26:56,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:26:56,353 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:26:56,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:26:56,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:26:56,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:26:56,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:26:56,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:56,649 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:26:56,649 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 [2022-11-16 12:26:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:57,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:59,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:26:59,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675522058] [2022-11-16 12:26:59,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675522058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:59,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:26:59,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-16 12:26:59,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610663789] [2022-11-16 12:26:59,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:59,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:26:59,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:26:59,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:26:59,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:26:59,161 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) [2022-11-16 12:27:00,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:27:00,882 INFO L93 Difference]: Finished difference Result 960 states and 2726 transitions. [2022-11-16 12:27:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:27:00,884 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 [2022-11-16 12:27:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:27:00,886 INFO L225 Difference]: With dead ends: 960 [2022-11-16 12:27:00,886 INFO L226 Difference]: Without dead ends: 960 [2022-11-16 12:27:00,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:27:00,887 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:27:00,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 56 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 11 Unchecked, 1.1s Time] [2022-11-16 12:27:00,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-11-16 12:27:00,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 921. [2022-11-16 12:27:00,908 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) [2022-11-16 12:27:00,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 2624 transitions. [2022-11-16 12:27:00,911 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 2624 transitions. Word has length 17 [2022-11-16 12:27:00,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:27:00,917 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 2624 transitions. [2022-11-16 12:27:00,917 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) [2022-11-16 12:27:00,918 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 2624 transitions. [2022-11-16 12:27:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:27:00,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:27:00,919 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:00,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:27:01,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:27:01,120 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:27:01,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:01,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1603100498, now seen corresponding path program 3 times [2022-11-16 12:27:01,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:27:01,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429194409] [2022-11-16 12:27:01,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:27:01,121 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 [2022-11-16 12:27:01,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:27:01,122 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:27:01,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:27:01,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 12:27:01,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:27:01,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:27:01,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:01,455 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:27:01,456 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 [2022-11-16 12:27:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:27:01,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:02,114 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:27:02,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:27:02,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429194409] [2022-11-16 12:27:02,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429194409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:02,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:27:02,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-16 12:27:02,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081434853] [2022-11-16 12:27:02,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:02,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:27:02,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:27:02,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:27:02,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:27:02,116 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) [2022-11-16 12:27:02,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:27:02,543 INFO L93 Difference]: Finished difference Result 905 states and 2580 transitions. [2022-11-16 12:27:02,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:27:02,545 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 [2022-11-16 12:27:02,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:27:02,546 INFO L225 Difference]: With dead ends: 905 [2022-11-16 12:27:02,546 INFO L226 Difference]: Without dead ends: 905 [2022-11-16 12:27:02,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:27:02,547 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 [2022-11-16 12:27:02,548 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] [2022-11-16 12:27:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-11-16 12:27:02,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 903. [2022-11-16 12:27:02,565 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) [2022-11-16 12:27:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 2576 transitions. [2022-11-16 12:27:02,567 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 2576 transitions. Word has length 17 [2022-11-16 12:27:02,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:27:02,568 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 2576 transitions. [2022-11-16 12:27:02,568 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) [2022-11-16 12:27:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 2576 transitions. [2022-11-16 12:27:02,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:27:02,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:27:02,570 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:02,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:02,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:27:02,772 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:27:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:02,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1796284314, now seen corresponding path program 1 times [2022-11-16 12:27:02,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:27:02,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366624873] [2022-11-16 12:27:02,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:02,774 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 [2022-11-16 12:27:02,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:27:02,775 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:27:02,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:27:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:02,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:27:02,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:03,077 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:27:03,078 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 [2022-11-16 12:27:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:03,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:05,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:27:05,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366624873] [2022-11-16 12:27:05,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366624873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:05,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:27:05,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2022-11-16 12:27:05,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648826202] [2022-11-16 12:27:05,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:05,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:27:05,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:27:05,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:27:05,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:27:05,500 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) [2022-11-16 12:27:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:27:07,438 INFO L93 Difference]: Finished difference Result 928 states and 2662 transitions. [2022-11-16 12:27:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:27:07,440 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 [2022-11-16 12:27:07,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:27:07,442 INFO L225 Difference]: With dead ends: 928 [2022-11-16 12:27:07,442 INFO L226 Difference]: Without dead ends: 928 [2022-11-16 12:27:07,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:27:07,443 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:27:07,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 68 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 40 Unchecked, 1.0s Time] [2022-11-16 12:27:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-11-16 12:27:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 904. [2022-11-16 12:27:07,463 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) [2022-11-16 12:27:07,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2579 transitions. [2022-11-16 12:27:07,467 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2579 transitions. Word has length 18 [2022-11-16 12:27:07,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:27:07,467 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 2579 transitions. [2022-11-16 12:27:07,468 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) [2022-11-16 12:27:07,468 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2579 transitions. [2022-11-16 12:27:07,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:27:07,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:27:07,469 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:07,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:27:07,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:27:07,670 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:27:07,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:07,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1557682358, now seen corresponding path program 2 times [2022-11-16 12:27:07,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:27:07,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344750796] [2022-11-16 12:27:07,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:27:07,671 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 [2022-11-16 12:27:07,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:27:07,673 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:27:07,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:27:07,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:27:07,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:27:07,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:27:07,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:07,965 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:27:07,966 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 [2022-11-16 12:27:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:08,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:10,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:27:10,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344750796] [2022-11-16 12:27:10,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344750796] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:10,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:27:10,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-16 12:27:10,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753325725] [2022-11-16 12:27:10,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:10,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:27:10,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:27:10,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:27:10,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:27:10,259 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) [2022-11-16 12:27:21,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:27:21,915 INFO L93 Difference]: Finished difference Result 1319 states and 3614 transitions. [2022-11-16 12:27:21,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:27:21,918 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 [2022-11-16 12:27:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:27:21,920 INFO L225 Difference]: With dead ends: 1319 [2022-11-16 12:27:21,920 INFO L226 Difference]: Without dead ends: 1319 [2022-11-16 12:27:21,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=297, Invalid=695, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:27:21,921 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 243 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s 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, 6.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:27:21,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 82 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-16 12:27:21,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2022-11-16 12:27:21,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 952. [2022-11-16 12:27:21,946 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) [2022-11-16 12:27:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 2680 transitions. [2022-11-16 12:27:21,950 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 2680 transitions. Word has length 18 [2022-11-16 12:27:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:27:21,951 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 2680 transitions. [2022-11-16 12:27:21,951 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) [2022-11-16 12:27:21,951 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 2680 transitions. [2022-11-16 12:27:21,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:27:21,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:27:21,964 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:21,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:22,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:27:22,179 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:27:22,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:22,179 INFO L85 PathProgramCache]: Analyzing trace with hash -17140667, now seen corresponding path program 3 times [2022-11-16 12:27:22,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:27:22,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203237873] [2022-11-16 12:27:22,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:27:22,180 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 [2022-11-16 12:27:22,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:27:22,181 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:27:22,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:27:22,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 12:27:22,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:27:22,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 12:27:22,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:22,719 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 12:27:22,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-16 12:27:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:23,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:28,235 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:28,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:27:28,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203237873] [2022-11-16 12:27:28,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203237873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:28,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:27:28,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2022-11-16 12:27:28,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230005351] [2022-11-16 12:27:28,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:28,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:27:28,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:27:28,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:27:28,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:27:28,237 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) [2022-11-16 12:28:00,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:00,549 INFO L93 Difference]: Finished difference Result 2141 states and 5552 transitions. [2022-11-16 12:28:00,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 12:28:00,551 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 [2022-11-16 12:28:00,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:00,555 INFO L225 Difference]: With dead ends: 2141 [2022-11-16 12:28:00,555 INFO L226 Difference]: Without dead ends: 2141 [2022-11-16 12:28:00,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=1198, Invalid=2962, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 12:28:00,556 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1115 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 2931 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s 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, 15.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:00,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 315 Invalid, 3013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2931 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2022-11-16 12:28:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2022-11-16 12:28:00,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 931. [2022-11-16 12:28:00,591 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) [2022-11-16 12:28:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 2597 transitions. [2022-11-16 12:28:00,595 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 2597 transitions. Word has length 19 [2022-11-16 12:28:00,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:00,595 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 2597 transitions. [2022-11-16 12:28:00,595 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) [2022-11-16 12:28:00,596 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 2597 transitions. [2022-11-16 12:28:00,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:28:00,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:00,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:00,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:28:00,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:00,816 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:28:00,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:00,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1800243389, now seen corresponding path program 1 times [2022-11-16 12:28:00,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:28:00,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531177279] [2022-11-16 12:28:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:00,817 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 [2022-11-16 12:28:00,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:28:00,818 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:28:00,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:28:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:01,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-16 12:28:01,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:01,107 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 [2022-11-16 12:28:01,172 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 [2022-11-16 12:28:01,383 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 [2022-11-16 12:28:01,536 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:01,536 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 [2022-11-16 12:28:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:28:01,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:02,241 WARN L833 $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 [2022-11-16 12:28:02,344 WARN L833 $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 [2022-11-16 12:28:02,435 WARN L833 $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 [2022-11-16 12:28:02,503 WARN L833 $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 [2022-11-16 12:28:02,608 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:02,608 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 [2022-11-16 12:28:02,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:02,647 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 [2022-11-16 12:28:02,676 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:02,677 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 [2022-11-16 12:28:24,776 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:24,777 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 [2022-11-16 12:28:24,797 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:24,798 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 [2022-11-16 12:28:24,818 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:24,818 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 [2022-11-16 12:29:07,370 WARN L233 SmtUtils]: Spent 25.59s on a formula simplification. DAG size of input: 495 DAG size of output: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:29:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-16 12:29:07,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:07,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531177279] [2022-11-16 12:29:07,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531177279] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:07,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:29:07,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2022-11-16 12:29:07,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245387414] [2022-11-16 12:29:07,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:07,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:29:07,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:07,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:29:07,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=195, Unknown=4, NotChecked=124, Total=380 [2022-11-16 12:29:07,394 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) [2022-11-16 12:29:10,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:10,653 INFO L93 Difference]: Finished difference Result 1661 states and 4499 transitions. [2022-11-16 12:29:10,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:29:10,654 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 [2022-11-16 12:29:10,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:10,657 INFO L225 Difference]: With dead ends: 1661 [2022-11-16 12:29:10,657 INFO L226 Difference]: Without dead ends: 1645 [2022-11-16 12:29:10,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 4 IntricatePredicates, 3 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=137, Invalid=475, Unknown=4, NotChecked=196, Total=812 [2022-11-16 12:29:10,658 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 [2022-11-16 12:29:10,658 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] [2022-11-16 12:29:10,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2022-11-16 12:29:10,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1062. [2022-11-16 12:29:10,682 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) [2022-11-16 12:29:10,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 2896 transitions. [2022-11-16 12:29:10,685 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 2896 transitions. Word has length 19 [2022-11-16 12:29:10,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:10,686 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 2896 transitions. [2022-11-16 12:29:10,686 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) [2022-11-16 12:29:10,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 2896 transitions. [2022-11-16 12:29:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:29:10,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:10,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:10,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:10,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:10,893 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:29:10,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:10,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1838126009, now seen corresponding path program 2 times [2022-11-16 12:29:10,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:10,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986117203] [2022-11-16 12:29:10,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:29:10,894 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 [2022-11-16 12:29:10,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:10,895 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:29:10,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:11,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:29:11,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:29:11,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-16 12:29:11,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:11,132 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 [2022-11-16 12:29:11,550 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 [2022-11-16 12:29:11,765 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:11,766 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 [2022-11-16 12:29:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:29:12,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:12,730 WARN L833 $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 [2022-11-16 12:29:12,837 WARN L833 $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 [2022-11-16 12:29:13,170 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-16 12:29:13,170 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 [2022-11-16 12:29:13,196 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:13,196 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 [2022-11-16 12:29:16,654 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-16 12:29:16,655 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 [2022-11-16 12:29:16,683 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:16,683 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 [2022-11-16 12:29:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-16 12:29:27,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:27,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986117203] [2022-11-16 12:29:27,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986117203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:27,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:29:27,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2022-11-16 12:29:27,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403310503] [2022-11-16 12:29:27,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:27,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:29:27,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:27,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:29:27,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=247, Unknown=2, NotChecked=66, Total=380 [2022-11-16 12:29:27,440 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) [2022-11-16 12:29:34,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:34,213 INFO L93 Difference]: Finished difference Result 1664 states and 4468 transitions. [2022-11-16 12:29:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:29:34,215 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 [2022-11-16 12:29:34,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:34,217 INFO L225 Difference]: With dead ends: 1664 [2022-11-16 12:29:34,218 INFO L226 Difference]: Without dead ends: 1652 [2022-11-16 12:29:34,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=152, Invalid=556, Unknown=2, NotChecked=102, Total=812 [2022-11-16 12:29:34,218 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 117 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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 [2022-11-16 12:29:34,219 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] [2022-11-16 12:29:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2022-11-16 12:29:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1101. [2022-11-16 12:29:34,237 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) [2022-11-16 12:29:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 2975 transitions. [2022-11-16 12:29:34,241 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 2975 transitions. Word has length 19 [2022-11-16 12:29:34,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:34,242 INFO L495 AbstractCegarLoop]: Abstraction has 1101 states and 2975 transitions. [2022-11-16 12:29:34,242 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) [2022-11-16 12:29:34,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 2975 transitions. [2022-11-16 12:29:34,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:29:34,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:34,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:34,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:34,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:34,459 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:29:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:34,459 INFO L85 PathProgramCache]: Analyzing trace with hash 522765411, now seen corresponding path program 3 times [2022-11-16 12:29:34,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:34,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593998441] [2022-11-16 12:29:34,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:29:34,460 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 [2022-11-16 12:29:34,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:34,461 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:29:34,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:34,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:29:34,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:29:34,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 12:29:34,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:34,708 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 [2022-11-16 12:29:35,094 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 [2022-11-16 12:29:35,280 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:35,281 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 [2022-11-16 12:29:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:29:35,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:36,264 WARN L833 $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 [2022-11-16 12:29:36,375 WARN L833 $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 [2022-11-16 12:29:36,702 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-16 12:29:36,703 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 [2022-11-16 12:29:36,728 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:36,729 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 82 treesize of output 54 [2022-11-16 12:29:38,895 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-16 12:29:38,895 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 [2022-11-16 12:29:38,923 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:38,923 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 [2022-11-16 12:29:49,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-16 12:29:49,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:49,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593998441] [2022-11-16 12:29:49,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593998441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:49,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:29:49,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2022-11-16 12:29:49,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361472817] [2022-11-16 12:29:49,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:49,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:29:49,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:49,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:29:49,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=247, Unknown=2, NotChecked=66, Total=380 [2022-11-16 12:29:49,582 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) [2022-11-16 12:29:53,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:53,397 INFO L93 Difference]: Finished difference Result 1685 states and 4566 transitions. [2022-11-16 12:29:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:29:53,398 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 [2022-11-16 12:29:53,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:53,401 INFO L225 Difference]: With dead ends: 1685 [2022-11-16 12:29:53,401 INFO L226 Difference]: Without dead ends: 1673 [2022-11-16 12:29:53,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=176, Invalid=700, Unknown=2, NotChecked=114, Total=992 [2022-11-16 12:29:53,402 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, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:53,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 34 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 370 Invalid, 0 Unknown, 347 Unchecked, 2.0s Time] [2022-11-16 12:29:53,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2022-11-16 12:29:53,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1103. [2022-11-16 12:29:53,421 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) [2022-11-16 12:29:53,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2992 transitions. [2022-11-16 12:29:53,424 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2992 transitions. Word has length 19 [2022-11-16 12:29:53,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:53,424 INFO L495 AbstractCegarLoop]: Abstraction has 1103 states and 2992 transitions. [2022-11-16 12:29:53,424 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) [2022-11-16 12:29:53,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2992 transitions. [2022-11-16 12:29:53,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:29:53,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:53,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:53,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:53,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:53,627 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:29:53,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:53,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1029344515, now seen corresponding path program 4 times [2022-11-16 12:29:53,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:53,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854412027] [2022-11-16 12:29:53,628 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:29:53,628 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 [2022-11-16 12:29:53,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:53,629 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:29:53,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:53,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:29:53,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:29:53,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:29:53,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:53,931 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 [2022-11-16 12:29:54,016 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 [2022-11-16 12:29:54,347 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 [2022-11-16 12:29:54,535 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:54,536 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 [2022-11-16 12:29:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:29:54,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:55,564 WARN L833 $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 [2022-11-16 12:29:55,671 WARN L833 $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 [2022-11-16 12:29:56,293 WARN L833 $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 [2022-11-16 12:29:56,396 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:56,397 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 [2022-11-16 12:29:56,444 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:56,445 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 [2022-11-16 12:29:56,478 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:56,479 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 [2022-11-16 12:29:58,018 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:58,018 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 [2022-11-16 12:29:58,037 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:58,038 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 474 treesize of output 390 [2022-11-16 12:29:58,055 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:58,056 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 [2022-11-16 12:30:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-16 12:30:03,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:30:03,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854412027] [2022-11-16 12:30:03,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854412027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:30:03,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:30:03,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2022-11-16 12:30:03,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696547629] [2022-11-16 12:30:03,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:30:03,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:30:03,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:30:03,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:30:03,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=12, NotChecked=96, Total=380 [2022-11-16 12:30:03,204 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) [2022-11-16 12:30:09,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:09,179 INFO L93 Difference]: Finished difference Result 1924 states and 5259 transitions. [2022-11-16 12:30:09,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:30:09,180 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 [2022-11-16 12:30:09,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:09,184 INFO L225 Difference]: With dead ends: 1924 [2022-11-16 12:30:09,184 INFO L226 Difference]: Without dead ends: 1866 [2022-11-16 12:30:09,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=166, Invalid=644, Unknown=14, NotChecked=168, Total=992 [2022-11-16 12:30:09,185 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 153 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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 [2022-11-16 12:30:09,185 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] [2022-11-16 12:30:09,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2022-11-16 12:30:09,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1094. [2022-11-16 12:30:09,213 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) [2022-11-16 12:30:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 3030 transitions. [2022-11-16 12:30:09,217 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 3030 transitions. Word has length 19 [2022-11-16 12:30:09,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:09,217 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 3030 transitions. [2022-11-16 12:30:09,218 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) [2022-11-16 12:30:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 3030 transitions. [2022-11-16 12:30:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:30:09,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:09,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:09,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:30:09,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:09,434 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-16 12:30:09,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1853500513, now seen corresponding path program 5 times [2022-11-16 12:30:09,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:30:09,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597730492] [2022-11-16 12:30:09,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:30:09,435 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 [2022-11-16 12:30:09,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:30:09,437 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 12:30:09,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:30:09,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:30:09,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-16 12:30:09,736 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:30:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:30:09,918 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-16 12:30:09,919 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:30:09,920 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (21 of 22 remaining) [2022-11-16 12:30:09,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2022-11-16 12:30:09,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2022-11-16 12:30:09,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2022-11-16 12:30:09,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2022-11-16 12:30:09,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2022-11-16 12:30:09,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2022-11-16 12:30:09,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2022-11-16 12:30:09,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2022-11-16 12:30:09,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2022-11-16 12:30:09,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2022-11-16 12:30:09,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2022-11-16 12:30:09,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2022-11-16 12:30:09,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2022-11-16 12:30:09,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2022-11-16 12:30:09,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (6 of 22 remaining) [2022-11-16 12:30:09,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 22 remaining) [2022-11-16 12:30:09,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 22 remaining) [2022-11-16 12:30:09,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 22 remaining) [2022-11-16 12:30:09,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 22 remaining) [2022-11-16 12:30:09,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 22 remaining) [2022-11-16 12:30:09,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 22 remaining) [2022-11-16 12:30:09,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:30:10,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649d4f9c-c1b0-4d1f-bf51-6aa68c609f7d/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:10,139 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] [2022-11-16 12:30:10,144 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:30:10,144 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:30:10,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:30:10 BasicIcfg [2022-11-16 12:30:10,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:30:10,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:30:10,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:30:10,192 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:30:10,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:02" (3/4) ... [2022-11-16 12:30:10,195 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:30:10,195 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:30:10,196 INFO L158 Benchmark]: Toolchain (without parser) took 429814.25ms. Allocated memory was 60.8MB in the beginning and 209.7MB in the end (delta: 148.9MB). Free memory was 39.7MB in the beginning and 150.6MB in the end (delta: -110.9MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2022-11-16 12:30:10,196 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 60.8MB. Free memory is still 42.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:30:10,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.77ms. Allocated memory is still 60.8MB. Free memory was 39.5MB in the beginning and 41.5MB in the end (delta: -2.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:30:10,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.09ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 39.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:30:10,197 INFO L158 Benchmark]: Boogie Preprocessor took 85.60ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 37.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:30:10,197 INFO L158 Benchmark]: RCFGBuilder took 1257.44ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 37.6MB in the beginning and 39.3MB in the end (delta: -1.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-16 12:30:10,197 INFO L158 Benchmark]: TraceAbstraction took 427834.23ms. Allocated memory was 81.8MB in the beginning and 209.7MB in the end (delta: 127.9MB). Free memory was 38.5MB in the beginning and 150.6MB in the end (delta: -112.1MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2022-11-16 12:30:10,197 INFO L158 Benchmark]: Witness Printer took 4.30ms. Allocated memory is still 209.7MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:30:10,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 60.8MB. Free memory is still 42.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.77ms. Allocated memory is still 60.8MB. Free memory was 39.5MB in the beginning and 41.5MB in the end (delta: -2.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.09ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 39.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.60ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 37.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1257.44ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 37.6MB in the beginning and 39.3MB in the end (delta: -1.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 427834.23ms. Allocated memory was 81.8MB in the beginning and 209.7MB in the end (delta: 127.9MB). Free memory was 38.5MB in the beginning and 150.6MB in the end (delta: -112.1MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * Witness Printer took 4.30ms. Allocated memory is still 209.7MB. Free memory is still 150.6MB. 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: 20.5s, 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: 399, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 399, dependent conditional: 0, dependent unconditional: 399, 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=3221225472] [L67] 2 counter = tmp [L62] 2 i++ VAL [A={10:0}, counter=1073741824, i=1, N=1, tmp=1073741824] [L49] COND FALSE 1 !(i