./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro --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 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:02:36,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:02:36,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:02:36,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:02:36,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:02:36,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:02:36,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:02:36,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:02:36,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:02:36,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:02:36,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:02:36,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:02:36,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:02:36,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:02:36,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:02:36,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:02:36,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:02:36,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:02:36,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:02:36,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:02:36,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:02:36,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:02:36,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:02:36,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:02:36,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:02:36,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:02:36,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:02:36,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:02:36,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:02:36,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:02:36,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:02:36,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:02:36,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:02:36,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:02:36,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:02:36,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:02:36,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:02:36,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:02:36,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:02:36,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:02:36,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:02:36,694 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:02:36,742 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:02:36,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:02:36,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:02:36,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:02:36,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:02:36,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:02:36,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:02:36,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:02:36,746 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:02:36,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:02:36,747 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:02:36,748 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:02:36,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:02:36,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:02:36,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:02:36,749 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:02:36,749 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:02:36,749 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:02:36,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:02:36,750 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:02:36,750 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:02:36,750 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:02:36,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:02:36,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:02:36,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:02:36,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:02:36,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:02:36,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:02:36,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:02:36,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:02:36,754 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_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-11-18 20:02:37,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:02:37,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:02:37,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:02:37,084 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:02:37,085 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:02:37,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-18 20:02:37,185 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/data/a4279d185/dfb862b1c844479c8f284b1b82e0bd90/FLAGdefbc0386 [2022-11-18 20:02:37,679 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:02:37,683 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-18 20:02:37,691 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/data/a4279d185/dfb862b1c844479c8f284b1b82e0bd90/FLAGdefbc0386 [2022-11-18 20:02:38,133 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/data/a4279d185/dfb862b1c844479c8f284b1b82e0bd90 [2022-11-18 20:02:38,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:02:38,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:02:38,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:02:38,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:02:38,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:02:38,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:02:38" (1/1) ... [2022-11-18 20:02:38,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b48c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:38, skipping insertion in model container [2022-11-18 20:02:38,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:02:38" (1/1) ... [2022-11-18 20:02:38,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:02:38,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:02:38,409 WARN L234 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_28d03755-016e-46f4-b8db-698c0c3af005/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-18 20:02:38,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:02:38,431 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) [2022-11-18 20:02:38,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2851aa3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:38, skipping insertion in model container [2022-11-18 20:02:38,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:02:38,433 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 20:02:38,435 INFO L158 Benchmark]: Toolchain (without parser) took 296.86ms. Allocated memory is still 100.7MB. Free memory was 68.6MB in the beginning and 76.4MB in the end (delta: -7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:02:38,436 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:02:38,437 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.99ms. Allocated memory is still 100.7MB. Free memory was 68.4MB in the beginning and 76.4MB in the end (delta: -8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:02:38,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.99ms. Allocated memory is still 100.7MB. Free memory was 68.4MB in the beginning and 76.4MB in the end (delta: -8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 122]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro --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 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:02:40,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:02:40,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:02:40,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:02:40,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:02:40,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:02:40,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:02:40,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:02:40,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:02:40,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:02:40,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:02:40,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:02:40,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:02:40,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:02:40,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:02:40,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:02:40,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:02:40,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:02:40,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:02:40,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:02:40,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:02:40,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:02:40,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:02:40,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:02:40,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:02:40,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:02:40,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:02:40,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:02:40,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:02:40,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:02:40,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:02:40,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:02:40,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:02:40,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:02:40,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:02:40,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:02:40,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:02:40,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:02:40,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:02:40,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:02:40,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:02:40,787 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 20:02:40,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:02:40,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:02:40,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:02:40,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:02:40,815 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:02:40,815 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:02:40,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:02:40,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:02:40,816 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:02:40,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:02:40,817 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:02:40,817 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:02:40,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:02:40,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:02:40,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:02:40,818 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:02:40,818 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:02:40,818 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:02:40,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:02:40,819 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:02:40,819 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 20:02:40,819 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 20:02:40,820 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:02:40,820 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:02:40,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:02:40,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:02:40,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:02:40,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:02:40,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:02:40,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:02:40,822 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 20:02:40,822 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 20:02:40,822 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 20:02:40,823 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_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-11-18 20:02:41,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:02:41,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:02:41,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:02:41,274 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:02:41,276 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:02:41,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-18 20:02:41,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/data/b907c8bbf/ee58a6ebb43f4b3bbaef8c52bf5f50ec/FLAGf81e44682 [2022-11-18 20:02:41,950 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:02:41,954 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-18 20:02:41,964 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/data/b907c8bbf/ee58a6ebb43f4b3bbaef8c52bf5f50ec/FLAGf81e44682 [2022-11-18 20:02:42,316 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/data/b907c8bbf/ee58a6ebb43f4b3bbaef8c52bf5f50ec [2022-11-18 20:02:42,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:02:42,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:02:42,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:02:42,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:02:42,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:02:42,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:02:42" (1/1) ... [2022-11-18 20:02:42,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@167deaf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42, skipping insertion in model container [2022-11-18 20:02:42,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:02:42" (1/1) ... [2022-11-18 20:02:42,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:02:42,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:02:42,538 WARN L234 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_28d03755-016e-46f4-b8db-698c0c3af005/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-18 20:02:42,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:02:42,602 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 20:02:42,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:02:42,630 WARN L234 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_28d03755-016e-46f4-b8db-698c0c3af005/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-18 20:02:42,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:02:42,646 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:02:42,674 WARN L234 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_28d03755-016e-46f4-b8db-698c0c3af005/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-18 20:02:42,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:02:42,699 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:02:42,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42 WrapperNode [2022-11-18 20:02:42,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:02:42,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:02:42,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:02:42,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:02:42,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42" (1/1) ... [2022-11-18 20:02:42,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42" (1/1) ... [2022-11-18 20:02:42,765 INFO L138 Inliner]: procedures = 27, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 201 [2022-11-18 20:02:42,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:02:42,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:02:42,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:02:42,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:02:42,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42" (1/1) ... [2022-11-18 20:02:42,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42" (1/1) ... [2022-11-18 20:02:42,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42" (1/1) ... [2022-11-18 20:02:42,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42" (1/1) ... [2022-11-18 20:02:42,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42" (1/1) ... [2022-11-18 20:02:42,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42" (1/1) ... [2022-11-18 20:02:42,800 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42" (1/1) ... [2022-11-18 20:02:42,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42" (1/1) ... [2022-11-18 20:02:42,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:02:42,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:02:42,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:02:42,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:02:42,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42" (1/1) ... [2022-11-18 20:02:42,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:02:42,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:42,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:02:42,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:02:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:02:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 20:02:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:02:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 20:02:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:02:42,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:02:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:02:42,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:02:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:02:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:02:42,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:02:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:02:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 20:02:42,915 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:02:43,064 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:02:43,070 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:02:43,795 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:02:43,805 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:02:43,805 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:02:43,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:02:43 BoogieIcfgContainer [2022-11-18 20:02:43,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:02:43,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:02:43,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:02:43,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:02:43,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:02:42" (1/3) ... [2022-11-18 20:02:43,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce7b1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:02:43, skipping insertion in model container [2022-11-18 20:02:43,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:42" (2/3) ... [2022-11-18 20:02:43,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce7b1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:02:43, skipping insertion in model container [2022-11-18 20:02:43,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:02:43" (3/3) ... [2022-11-18 20:02:43,826 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2022-11-18 20:02:43,848 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:02:43,848 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 20:02:43,849 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:02:44,028 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:02:44,064 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 20:02:44,079 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 278 transitions, 572 flow [2022-11-18 20:02:44,082 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 278 transitions, 572 flow [2022-11-18 20:02:44,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 278 transitions, 572 flow [2022-11-18 20:02:44,209 INFO L130 PetriNetUnfolder]: 19/276 cut-off events. [2022-11-18 20:02:44,210 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:02:44,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 276 events. 19/276 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 559 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2022-11-18 20:02:44,231 INFO L119 LiptonReduction]: Number of co-enabled transitions 13348 [2022-11-18 20:03:06,539 INFO L134 LiptonReduction]: Checked pairs total: 12388 [2022-11-18 20:03:06,540 INFO L136 LiptonReduction]: Total number of compositions: 319 [2022-11-18 20:03:06,547 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 86 flow [2022-11-18 20:03:06,571 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 150 states, 106 states have (on average 3.452830188679245) internal successors, (366), 149 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:06,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:03:06,596 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;@56d69f0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:03:06,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-18 20:03:06,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 106 states have (on average 3.452830188679245) internal successors, (366), 149 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:03:06,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:06,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:03:06,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:06,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:06,612 INFO L85 PathProgramCache]: Analyzing trace with hash 36180, now seen corresponding path program 1 times [2022-11-18 20:03:06,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:06,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946964085] [2022-11-18 20:03:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:06,627 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 [2022-11-18 20:03:06,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:06,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:06,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:06,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:03:06,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:06,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:06,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:06,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946964085] [2022-11-18 20:03:06,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946964085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:06,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:06,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:03:06,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424766492] [2022-11-18 20:03:06,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:06,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:03:06,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:06,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:03:06,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:06,922 INFO L87 Difference]: Start difference. First operand has 150 states, 106 states have (on average 3.452830188679245) internal successors, (366), 149 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:07,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:07,201 INFO L93 Difference]: Finished difference Result 152 states and 368 transitions. [2022-11-18 20:03:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:03:07,204 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 [2022-11-18 20:03:07,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:07,216 INFO L225 Difference]: With dead ends: 152 [2022-11-18 20:03:07,220 INFO L226 Difference]: Without dead ends: 152 [2022-11-18 20:03:07,221 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 [2022-11-18 20:03:07,225 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:07,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:07,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-18 20:03:07,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2022-11-18 20:03:07,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 107 states have (on average 3.439252336448598) internal successors, (368), 149 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:07,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 368 transitions. [2022-11-18 20:03:07,277 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 368 transitions. Word has length 2 [2022-11-18 20:03:07,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:07,278 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 368 transitions. [2022-11-18 20:03:07,278 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) [2022-11-18 20:03:07,278 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 368 transitions. [2022-11-18 20:03:07,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:03:07,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:07,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:03:07,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-18 20:03:07,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:07,491 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:07,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:07,492 INFO L85 PathProgramCache]: Analyzing trace with hash 36012, now seen corresponding path program 1 times [2022-11-18 20:03:07,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:07,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050506612] [2022-11-18 20:03:07,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:07,493 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 [2022-11-18 20:03:07,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:07,495 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:07,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:07,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:03:07,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:07,688 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-18 20:03:07,689 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 [2022-11-18 20:03:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:07,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:07,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:07,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050506612] [2022-11-18 20:03:07,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050506612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:07,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:07,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:03:07,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248915337] [2022-11-18 20:03:07,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:07,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:03:07,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:07,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:03:07,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:07,714 INFO L87 Difference]: Start difference. First operand 150 states and 368 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:07,887 INFO L93 Difference]: Finished difference Result 149 states and 366 transitions. [2022-11-18 20:03:07,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:03:07,888 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 [2022-11-18 20:03:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:07,890 INFO L225 Difference]: With dead ends: 149 [2022-11-18 20:03:07,890 INFO L226 Difference]: Without dead ends: 149 [2022-11-18 20:03:07,890 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 [2022-11-18 20:03:07,892 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:07,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:03:07,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-18 20:03:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-11-18 20:03:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 107 states have (on average 3.4205607476635516) internal successors, (366), 148 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:07,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 366 transitions. [2022-11-18 20:03:07,907 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 366 transitions. Word has length 2 [2022-11-18 20:03:07,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:07,907 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 366 transitions. [2022-11-18 20:03:07,907 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) [2022-11-18 20:03:07,908 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 366 transitions. [2022-11-18 20:03:07,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:03:07,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:07,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:03:07,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:08,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:08,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:08,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash 36013, now seen corresponding path program 1 times [2022-11-18 20:03:08,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:08,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47526629] [2022-11-18 20:03:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:08,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:08,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:08,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:08,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:08,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:03:08,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:08,266 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 20:03:08,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-18 20:03:08,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:08,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:08,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:08,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47526629] [2022-11-18 20:03:08,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47526629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:08,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:08,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:03:08,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209786016] [2022-11-18 20:03:08,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:08,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:03:08,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:08,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:03:08,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:08,295 INFO L87 Difference]: Start difference. First operand 149 states and 366 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:08,488 INFO L93 Difference]: Finished difference Result 149 states and 365 transitions. [2022-11-18 20:03:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:03:08,489 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 [2022-11-18 20:03:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:08,491 INFO L225 Difference]: With dead ends: 149 [2022-11-18 20:03:08,491 INFO L226 Difference]: Without dead ends: 149 [2022-11-18 20:03:08,491 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 [2022-11-18 20:03:08,493 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:08,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:03:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-18 20:03:08,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-11-18 20:03:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 107 states have (on average 3.411214953271028) internal successors, (365), 148 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:08,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 365 transitions. [2022-11-18 20:03:08,506 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 365 transitions. Word has length 2 [2022-11-18 20:03:08,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:08,506 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 365 transitions. [2022-11-18 20:03:08,507 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) [2022-11-18 20:03:08,507 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 365 transitions. [2022-11-18 20:03:08,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:03:08,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:08,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:03:08,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:08,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:08,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:08,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:08,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1121118, now seen corresponding path program 1 times [2022-11-18 20:03:08,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:08,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66176547] [2022-11-18 20:03:08,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:08,721 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 [2022-11-18 20:03:08,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:08,722 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:08,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:08,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:03:08,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:08,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:08,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:08,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:08,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66176547] [2022-11-18 20:03:08,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66176547] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:08,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:03:08,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 20:03:08,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642264501] [2022-11-18 20:03:08,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:08,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:03:08,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:08,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:03:08,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:08,903 INFO L87 Difference]: Start difference. First operand 149 states and 365 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:09,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:09,224 INFO L93 Difference]: Finished difference Result 152 states and 369 transitions. [2022-11-18 20:03:09,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:09,225 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 [2022-11-18 20:03:09,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:09,227 INFO L225 Difference]: With dead ends: 152 [2022-11-18 20:03:09,227 INFO L226 Difference]: Without dead ends: 152 [2022-11-18 20:03:09,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:09,229 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:09,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-18 20:03:09,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2022-11-18 20:03:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 3.385321100917431) internal successors, (369), 150 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:09,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 369 transitions. [2022-11-18 20:03:09,241 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 369 transitions. Word has length 3 [2022-11-18 20:03:09,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:09,241 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 369 transitions. [2022-11-18 20:03:09,242 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) [2022-11-18 20:03:09,242 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 369 transitions. [2022-11-18 20:03:09,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:03:09,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:09,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:03:09,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:09,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:09,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:09,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:09,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1120951, now seen corresponding path program 1 times [2022-11-18 20:03:09,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:09,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6995249] [2022-11-18 20:03:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:09,455 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 [2022-11-18 20:03:09,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:09,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:09,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:09,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:03:09,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:09,616 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 20:03:09,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-18 20:03:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:09,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:09,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:09,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6995249] [2022-11-18 20:03:09,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6995249] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:09,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:03:09,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 20:03:09,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202162363] [2022-11-18 20:03:09,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:09,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:03:09,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:09,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:03:09,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:09,806 INFO L87 Difference]: Start difference. First operand 151 states and 369 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:10,249 INFO L93 Difference]: Finished difference Result 151 states and 367 transitions. [2022-11-18 20:03:10,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:10,250 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 [2022-11-18 20:03:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:10,251 INFO L225 Difference]: With dead ends: 151 [2022-11-18 20:03:10,252 INFO L226 Difference]: Without dead ends: 151 [2022-11-18 20:03:10,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:10,253 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:10,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:03:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-18 20:03:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-11-18 20:03:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 3.36697247706422) internal successors, (367), 150 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 367 transitions. [2022-11-18 20:03:10,263 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 367 transitions. Word has length 3 [2022-11-18 20:03:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:10,264 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 367 transitions. [2022-11-18 20:03:10,264 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) [2022-11-18 20:03:10,264 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 367 transitions. [2022-11-18 20:03:10,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:03:10,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:10,265 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-18 20:03:10,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:10,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:10,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:10,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:10,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1077379614, now seen corresponding path program 2 times [2022-11-18 20:03:10,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:10,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834240765] [2022-11-18 20:03:10,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:03:10,478 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 [2022-11-18 20:03:10,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:10,479 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:10,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:10,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:03:10,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:10,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:03:10,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:10,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:10,640 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 20:03:10,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2022-11-18 20:03:10,651 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 [2022-11-18 20:03:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:10,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:10,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:10,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834240765] [2022-11-18 20:03:10,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834240765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:10,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:10,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:03:10,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338097898] [2022-11-18 20:03:10,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:10,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:03:10,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:03:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:10,759 INFO L87 Difference]: Start difference. First operand 151 states and 367 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:10,865 INFO L93 Difference]: Finished difference Result 150 states and 366 transitions. [2022-11-18 20:03:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:03:10,865 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 [2022-11-18 20:03:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:10,867 INFO L225 Difference]: With dead ends: 150 [2022-11-18 20:03:10,867 INFO L226 Difference]: Without dead ends: 150 [2022-11-18 20:03:10,867 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 [2022-11-18 20:03:10,868 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 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 [2022-11-18 20:03:10,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-11-18 20:03:10,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-18 20:03:10,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-18 20:03:10,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 109 states have (on average 3.3577981651376145) internal successors, (366), 149 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:10,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 366 transitions. [2022-11-18 20:03:10,888 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 366 transitions. Word has length 5 [2022-11-18 20:03:10,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:10,889 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 366 transitions. [2022-11-18 20:03:10,890 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) [2022-11-18 20:03:10,890 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 366 transitions. [2022-11-18 20:03:10,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:03:10,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:10,891 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-18 20:03:10,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:11,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:11,107 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:11,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:11,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1077379616, now seen corresponding path program 1 times [2022-11-18 20:03:11,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:11,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345440945] [2022-11-18 20:03:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:11,109 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 [2022-11-18 20:03:11,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:11,110 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:11,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:11,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:03:11,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:11,284 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2022-11-18 20:03:11,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 33 [2022-11-18 20:03:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:11,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:11,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:11,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345440945] [2022-11-18 20:03:11,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345440945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:11,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:11,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:03:11,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574824944] [2022-11-18 20:03:11,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:11,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:03:11,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:11,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:03:11,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:11,325 INFO L87 Difference]: Start difference. First operand 150 states and 366 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) [2022-11-18 20:03:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:11,457 INFO L93 Difference]: Finished difference Result 124 states and 290 transitions. [2022-11-18 20:03:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:03:11,458 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 [2022-11-18 20:03:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:11,459 INFO L225 Difference]: With dead ends: 124 [2022-11-18 20:03:11,459 INFO L226 Difference]: Without dead ends: 124 [2022-11-18 20:03:11,459 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 [2022-11-18 20:03:11,460 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:11,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:03:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-18 20:03:11,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-11-18 20:03:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 93 states have (on average 3.118279569892473) internal successors, (290), 123 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:11,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 290 transitions. [2022-11-18 20:03:11,475 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 290 transitions. Word has length 5 [2022-11-18 20:03:11,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:11,476 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 290 transitions. [2022-11-18 20:03:11,476 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) [2022-11-18 20:03:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 290 transitions. [2022-11-18 20:03:11,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:03:11,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:11,476 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-18 20:03:11,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:11,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:11,697 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:11,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:11,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1077379447, now seen corresponding path program 2 times [2022-11-18 20:03:11,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:11,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374831568] [2022-11-18 20:03:11,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:03:11,699 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 [2022-11-18 20:03:11,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:11,700 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:11,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:11,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:03:11,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:11,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:03:11,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:11,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:12,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:12,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374831568] [2022-11-18 20:03:12,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374831568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:12,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:03:12,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-18 20:03:12,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489550281] [2022-11-18 20:03:12,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:12,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:03:12,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:12,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:03:12,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:03:12,027 INFO L87 Difference]: Start difference. First operand 124 states and 290 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:12,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:12,284 INFO L93 Difference]: Finished difference Result 123 states and 288 transitions. [2022-11-18 20:03:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:03:12,284 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 20:03:12,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:12,286 INFO L225 Difference]: With dead ends: 123 [2022-11-18 20:03:12,286 INFO L226 Difference]: Without dead ends: 123 [2022-11-18 20:03:12,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:03:12,287 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:12,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:03:12,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-18 20:03:12,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-11-18 20:03:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 93 states have (on average 3.096774193548387) internal successors, (288), 122 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) [2022-11-18 20:03:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 288 transitions. [2022-11-18 20:03:12,293 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 288 transitions. Word has length 5 [2022-11-18 20:03:12,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:12,293 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 288 transitions. [2022-11-18 20:03:12,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:12,293 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 288 transitions. [2022-11-18 20:03:12,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:03:12,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:12,294 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-18 20:03:12,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:03:12,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:12,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:12,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:12,520 INFO L85 PathProgramCache]: Analyzing trace with hash 274716910, now seen corresponding path program 1 times [2022-11-18 20:03:12,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:12,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918394343] [2022-11-18 20:03:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:12,521 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 [2022-11-18 20:03:12,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:12,522 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:12,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:12,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:03:12,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:12,703 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-18 20:03:12,704 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 22 [2022-11-18 20:03:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:12,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:12,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:12,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918394343] [2022-11-18 20:03:12,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918394343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:12,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:12,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:03:12,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958973402] [2022-11-18 20:03:12,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:12,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:03:12,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:03:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:12,739 INFO L87 Difference]: Start difference. First operand 123 states and 288 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:12,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:12,865 INFO L93 Difference]: Finished difference Result 113 states and 268 transitions. [2022-11-18 20:03:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:03:12,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 20:03:12,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:12,867 INFO L225 Difference]: With dead ends: 113 [2022-11-18 20:03:12,867 INFO L226 Difference]: Without dead ends: 113 [2022-11-18 20:03:12,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:12,868 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:12,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:03:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-18 20:03:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-11-18 20:03:12,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 89 states have (on average 3.0112359550561796) internal successors, (268), 112 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:12,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 268 transitions. [2022-11-18 20:03:12,874 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 268 transitions. Word has length 7 [2022-11-18 20:03:12,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:12,874 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 268 transitions. [2022-11-18 20:03:12,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:12,874 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 268 transitions. [2022-11-18 20:03:12,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:03:12,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:12,880 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-18 20:03:12,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:13,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:13,080 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:13,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash 274716911, now seen corresponding path program 1 times [2022-11-18 20:03:13,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:13,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604916059] [2022-11-18 20:03:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:13,081 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 [2022-11-18 20:03:13,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:13,082 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:13,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:13,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:03:13,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:13,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:13,252 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-11-18 20:03:13,253 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 1 case distinctions, treesize of input 12 treesize of output 23 [2022-11-18 20:03:13,265 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 26 treesize of output 24 [2022-11-18 20:03:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:13,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:13,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:13,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604916059] [2022-11-18 20:03:13,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604916059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:13,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:13,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:03:13,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830141812] [2022-11-18 20:03:13,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:13,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:03:13,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:13,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:03:13,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:13,322 INFO L87 Difference]: Start difference. First operand 113 states and 268 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:13,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:13,429 INFO L93 Difference]: Finished difference Result 103 states and 248 transitions. [2022-11-18 20:03:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:03:13,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 20:03:13,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:13,430 INFO L225 Difference]: With dead ends: 103 [2022-11-18 20:03:13,430 INFO L226 Difference]: Without dead ends: 103 [2022-11-18 20:03:13,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:13,431 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:13,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:03:13,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-18 20:03:13,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-18 20:03:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 85 states have (on average 2.9176470588235293) internal successors, (248), 102 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 248 transitions. [2022-11-18 20:03:13,436 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 248 transitions. Word has length 7 [2022-11-18 20:03:13,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:13,436 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 248 transitions. [2022-11-18 20:03:13,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 248 transitions. [2022-11-18 20:03:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 20:03:13,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:13,437 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-18 20:03:13,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:13,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:13,649 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:13,649 INFO L85 PathProgramCache]: Analyzing trace with hash -73711074, now seen corresponding path program 1 times [2022-11-18 20:03:13,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:13,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125271061] [2022-11-18 20:03:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:13,650 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 [2022-11-18 20:03:13,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:13,651 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:13,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:13,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:03:13,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:13,795 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-18 20:03:13,795 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 [2022-11-18 20:03:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:13,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:13,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:13,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125271061] [2022-11-18 20:03:13,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125271061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:13,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:13,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:03:13,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384577114] [2022-11-18 20:03:13,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:13,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:03:13,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:13,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:03:13,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:03:13,832 INFO L87 Difference]: Start difference. First operand 103 states and 248 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) [2022-11-18 20:03:13,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:13,957 INFO L93 Difference]: Finished difference Result 72 states and 168 transitions. [2022-11-18 20:03:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:03:13,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 20:03:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:13,959 INFO L225 Difference]: With dead ends: 72 [2022-11-18 20:03:13,959 INFO L226 Difference]: Without dead ends: 72 [2022-11-18 20:03:13,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:03:13,960 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:13,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:03:13,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-18 20:03:13,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-11-18 20:03:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 2.625) internal successors, (168), 71 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 168 transitions. [2022-11-18 20:03:13,964 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 168 transitions. Word has length 8 [2022-11-18 20:03:13,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:13,964 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 168 transitions. [2022-11-18 20:03:13,964 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) [2022-11-18 20:03:13,964 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 168 transitions. [2022-11-18 20:03:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 20:03:13,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:13,965 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-18 20:03:13,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:14,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:14,174 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash -73711073, now seen corresponding path program 1 times [2022-11-18 20:03:14,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:14,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702991725] [2022-11-18 20:03:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:14,175 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 [2022-11-18 20:03:14,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:14,176 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:14,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:03:14,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:14,345 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 20:03:14,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-18 20:03:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:14,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:14,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:14,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702991725] [2022-11-18 20:03:14,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702991725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:14,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:14,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:03:14,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867369259] [2022-11-18 20:03:14,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:14,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:03:14,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:14,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:03:14,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:03:14,434 INFO L87 Difference]: Start difference. First operand 72 states and 168 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:14,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:14,672 INFO L93 Difference]: Finished difference Result 110 states and 258 transitions. [2022-11-18 20:03:14,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:14,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 20:03:14,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:14,673 INFO L225 Difference]: With dead ends: 110 [2022-11-18 20:03:14,674 INFO L226 Difference]: Without dead ends: 110 [2022-11-18 20:03:14,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:03:14,674 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:14,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:03:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-18 20:03:14,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 86. [2022-11-18 20:03:14,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 78 states have (on average 2.7948717948717947) internal successors, (218), 85 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 218 transitions. [2022-11-18 20:03:14,678 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 218 transitions. Word has length 8 [2022-11-18 20:03:14,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:14,679 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 218 transitions. [2022-11-18 20:03:14,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 218 transitions. [2022-11-18 20:03:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:03:14,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:14,679 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:14,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:14,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:14,880 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:14,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:14,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2009925140, now seen corresponding path program 1 times [2022-11-18 20:03:14,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:14,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011974970] [2022-11-18 20:03:14,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:14,881 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 [2022-11-18 20:03:14,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:14,883 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:14,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:15,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:03:15,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:15,084 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 20:03:15,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-18 20:03:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:15,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:15,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:15,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011974970] [2022-11-18 20:03:15,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011974970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:15,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:03:15,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-18 20:03:15,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327557002] [2022-11-18 20:03:15,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:15,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:03:15,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:15,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:03:15,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:03:15,477 INFO L87 Difference]: Start difference. First operand 86 states and 218 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:16,170 INFO L93 Difference]: Finished difference Result 186 states and 438 transitions. [2022-11-18 20:03:16,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:03:16,171 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 20:03:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:16,172 INFO L225 Difference]: With dead ends: 186 [2022-11-18 20:03:16,172 INFO L226 Difference]: Without dead ends: 186 [2022-11-18 20:03:16,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:03:16,173 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 117 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:16,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 0 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:03:16,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-18 20:03:16,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 114. [2022-11-18 20:03:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 106 states have (on average 3.0) internal successors, (318), 113 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:16,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 318 transitions. [2022-11-18 20:03:16,179 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 318 transitions. Word has length 9 [2022-11-18 20:03:16,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:16,180 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 318 transitions. [2022-11-18 20:03:16,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:16,180 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 318 transitions. [2022-11-18 20:03:16,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:03:16,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:16,181 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:16,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:16,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:16,381 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:16,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2009972491, now seen corresponding path program 1 times [2022-11-18 20:03:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:16,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258397228] [2022-11-18 20:03:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:16,382 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 [2022-11-18 20:03:16,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:16,383 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:16,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:16,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:03:16,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:16,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:16,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:16,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258397228] [2022-11-18 20:03:16,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258397228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:16,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:16,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:03:16,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072472516] [2022-11-18 20:03:16,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:16,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:03:16,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:16,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:03:16,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:03:16,554 INFO L87 Difference]: Start difference. First operand 114 states and 318 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-11-18 20:03:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:16,660 INFO L93 Difference]: Finished difference Result 86 states and 222 transitions. [2022-11-18 20:03:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:03:16,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 9 [2022-11-18 20:03:16,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:16,662 INFO L225 Difference]: With dead ends: 86 [2022-11-18 20:03:16,662 INFO L226 Difference]: Without dead ends: 86 [2022-11-18 20:03:16,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:03:16,663 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:16,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:03:16,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-18 20:03:16,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-18 20:03:16,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 2.707317073170732) internal successors, (222), 85 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 222 transitions. [2022-11-18 20:03:16,667 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 222 transitions. Word has length 9 [2022-11-18 20:03:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:16,667 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 222 transitions. [2022-11-18 20:03:16,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-11-18 20:03:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 222 transitions. [2022-11-18 20:03:16,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 20:03:16,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:16,668 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:16,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:16,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:16,875 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:16,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:16,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2115361444, now seen corresponding path program 1 times [2022-11-18 20:03:16,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:16,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304398782] [2022-11-18 20:03:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:16,876 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 [2022-11-18 20:03:16,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:16,877 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:16,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:16,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:03:16,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:17,049 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 20:03:17,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-18 20:03:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:17,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:17,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:17,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304398782] [2022-11-18 20:03:17,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304398782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:17,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:17,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:03:17,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309330644] [2022-11-18 20:03:17,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:17,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:03:17,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:17,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:03:17,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:03:17,142 INFO L87 Difference]: Start difference. First operand 86 states and 222 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:17,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:17,362 INFO L93 Difference]: Finished difference Result 120 states and 314 transitions. [2022-11-18 20:03:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:17,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 20:03:17,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:17,364 INFO L225 Difference]: With dead ends: 120 [2022-11-18 20:03:17,364 INFO L226 Difference]: Without dead ends: 120 [2022-11-18 20:03:17,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:03:17,365 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:17,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:03:17,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-18 20:03:17,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 102. [2022-11-18 20:03:17,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 2.8877551020408165) internal successors, (283), 101 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 283 transitions. [2022-11-18 20:03:17,369 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 283 transitions. Word has length 10 [2022-11-18 20:03:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:17,370 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 283 transitions. [2022-11-18 20:03:17,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:17,370 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 283 transitions. [2022-11-18 20:03:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 20:03:17,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:17,371 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-11-18 20:03:17,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:17,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:17,571 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:17,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:17,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1197188236, now seen corresponding path program 2 times [2022-11-18 20:03:17,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:17,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550021643] [2022-11-18 20:03:17,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:03:17,572 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 [2022-11-18 20:03:17,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:17,573 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:17,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:17,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:03:17,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:17,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:03:17,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:17,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:17,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:17,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550021643] [2022-11-18 20:03:17,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550021643] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:17,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:03:17,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-18 20:03:17,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719253628] [2022-11-18 20:03:17,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:17,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:03:17,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:17,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:03:17,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:03:17,833 INFO L87 Difference]: Start difference. First operand 102 states and 283 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 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) [2022-11-18 20:03:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:18,482 INFO L93 Difference]: Finished difference Result 162 states and 369 transitions. [2022-11-18 20:03:18,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:03:18,482 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 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 11 [2022-11-18 20:03:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:18,483 INFO L225 Difference]: With dead ends: 162 [2022-11-18 20:03:18,483 INFO L226 Difference]: Without dead ends: 162 [2022-11-18 20:03:18,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:03:18,484 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 108 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:18,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 0 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:03:18,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-18 20:03:18,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 90. [2022-11-18 20:03:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 88 states have (on average 2.727272727272727) internal successors, (240), 89 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 240 transitions. [2022-11-18 20:03:18,489 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 240 transitions. Word has length 11 [2022-11-18 20:03:18,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:18,490 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 240 transitions. [2022-11-18 20:03:18,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 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) [2022-11-18 20:03:18,490 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 240 transitions. [2022-11-18 20:03:18,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 20:03:18,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:18,491 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:18,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-18 20:03:18,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:18,704 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:18,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:18,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1151692999, now seen corresponding path program 1 times [2022-11-18 20:03:18,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:18,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289135239] [2022-11-18 20:03:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:18,705 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 [2022-11-18 20:03:18,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:18,706 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:18,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:18,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:03:18,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:18,892 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 20:03:18,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-18 20:03:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:19,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:19,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:19,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289135239] [2022-11-18 20:03:19,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289135239] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:19,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:03:19,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-18 20:03:19,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515750075] [2022-11-18 20:03:19,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:19,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:03:19,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:19,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:03:19,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:03:19,347 INFO L87 Difference]: Start difference. First operand 90 states and 240 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:19,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:19,900 INFO L93 Difference]: Finished difference Result 166 states and 422 transitions. [2022-11-18 20:03:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:03:19,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 20:03:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:19,902 INFO L225 Difference]: With dead ends: 166 [2022-11-18 20:03:19,902 INFO L226 Difference]: Without dead ends: 166 [2022-11-18 20:03:19,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:03:19,904 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 118 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:19,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 0 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:03:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-18 20:03:19,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 118. [2022-11-18 20:03:19,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 116 states have (on average 2.9655172413793105) internal successors, (344), 117 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 344 transitions. [2022-11-18 20:03:19,910 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 344 transitions. Word has length 11 [2022-11-18 20:03:19,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:19,910 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 344 transitions. [2022-11-18 20:03:19,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 344 transitions. [2022-11-18 20:03:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:03:19,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:19,911 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:19,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:20,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:20,112 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:20,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:20,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1324664729, now seen corresponding path program 2 times [2022-11-18 20:03:20,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:20,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106308737] [2022-11-18 20:03:20,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:03:20,113 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 [2022-11-18 20:03:20,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:20,115 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:20,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:20,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:03:20,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:20,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:03:20,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:20,342 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 20:03:20,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-18 20:03:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:20,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:20,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:20,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106308737] [2022-11-18 20:03:20,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106308737] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:20,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:03:20,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2022-11-18 20:03:20,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144321038] [2022-11-18 20:03:20,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:20,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:03:20,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:20,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:03:20,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:03:20,961 INFO L87 Difference]: Start difference. First operand 118 states and 344 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:21,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:21,760 INFO L93 Difference]: Finished difference Result 152 states and 370 transitions. [2022-11-18 20:03:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:03:21,761 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 20:03:21,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:21,763 INFO L225 Difference]: With dead ends: 152 [2022-11-18 20:03:21,763 INFO L226 Difference]: Without dead ends: 152 [2022-11-18 20:03:21,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:03:21,764 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 123 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:21,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 0 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:03:21,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-18 20:03:21,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 104. [2022-11-18 20:03:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.8349514563106797) internal successors, (292), 103 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 292 transitions. [2022-11-18 20:03:21,770 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 292 transitions. Word has length 13 [2022-11-18 20:03:21,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:21,770 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 292 transitions. [2022-11-18 20:03:21,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:21,771 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 292 transitions. [2022-11-18 20:03:21,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:03:21,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:21,772 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:21,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-18 20:03:21,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:21,985 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:21,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:21,985 INFO L85 PathProgramCache]: Analyzing trace with hash 590186864, now seen corresponding path program 1 times [2022-11-18 20:03:21,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:21,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976284917] [2022-11-18 20:03:21,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:21,986 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 [2022-11-18 20:03:21,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:21,987 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:22,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:22,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:03:22,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:22,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:22,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:22,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976284917] [2022-11-18 20:03:22,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976284917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:22,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:22,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:03:22,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198343612] [2022-11-18 20:03:22,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:22,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:03:22,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:03:22,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:22,362 INFO L87 Difference]: Start difference. First operand 104 states and 292 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:22,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:22,760 INFO L93 Difference]: Finished difference Result 141 states and 357 transitions. [2022-11-18 20:03:22,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:22,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:03:22,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:22,761 INFO L225 Difference]: With dead ends: 141 [2022-11-18 20:03:22,761 INFO L226 Difference]: Without dead ends: 126 [2022-11-18 20:03:22,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:03:22,762 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:22,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:22,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-18 20:03:22,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 104. [2022-11-18 20:03:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.796116504854369) internal successors, (288), 103 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 288 transitions. [2022-11-18 20:03:22,768 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 288 transitions. Word has length 17 [2022-11-18 20:03:22,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:22,769 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 288 transitions. [2022-11-18 20:03:22,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 288 transitions. [2022-11-18 20:03:22,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:03:22,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:22,770 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:22,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:22,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:22,983 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:22,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:22,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1958051012, now seen corresponding path program 2 times [2022-11-18 20:03:22,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:22,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994684817] [2022-11-18 20:03:22,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:03:22,984 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 [2022-11-18 20:03:22,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:22,985 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:22,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:23,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:03:23,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:23,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:03:23,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:23,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:23,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:23,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994684817] [2022-11-18 20:03:23,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994684817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:23,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:23,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:03:23,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009564253] [2022-11-18 20:03:23,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:23,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:03:23,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:23,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:03:23,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:23,464 INFO L87 Difference]: Start difference. First operand 104 states and 288 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:23,845 INFO L93 Difference]: Finished difference Result 139 states and 358 transitions. [2022-11-18 20:03:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:23,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:03:23,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:23,847 INFO L225 Difference]: With dead ends: 139 [2022-11-18 20:03:23,847 INFO L226 Difference]: Without dead ends: 130 [2022-11-18 20:03:23,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:03:23,848 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:23,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:23,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-18 20:03:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 108. [2022-11-18 20:03:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.7850467289719627) internal successors, (298), 107 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 298 transitions. [2022-11-18 20:03:23,853 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 298 transitions. Word has length 17 [2022-11-18 20:03:23,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:23,854 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 298 transitions. [2022-11-18 20:03:23,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:23,854 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 298 transitions. [2022-11-18 20:03:23,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:03:23,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:23,855 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:23,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:24,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:24,067 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:24,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:24,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2047166864, now seen corresponding path program 3 times [2022-11-18 20:03:24,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:24,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239779177] [2022-11-18 20:03:24,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:03:24,068 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 [2022-11-18 20:03:24,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:24,069 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:24,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:24,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 20:03:24,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:24,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:03:24,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:25,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:25,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:25,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:25,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239779177] [2022-11-18 20:03:25,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239779177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:25,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:25,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:03:25,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820463092] [2022-11-18 20:03:25,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:25,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:03:25,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:25,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:03:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:25,188 INFO L87 Difference]: Start difference. First operand 108 states and 298 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:26,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:26,200 INFO L93 Difference]: Finished difference Result 137 states and 347 transitions. [2022-11-18 20:03:26,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:03:26,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:03:26,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:26,202 INFO L225 Difference]: With dead ends: 137 [2022-11-18 20:03:26,202 INFO L226 Difference]: Without dead ends: 133 [2022-11-18 20:03:26,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:03:26,203 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:26,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 32 Unchecked, 0.6s Time] [2022-11-18 20:03:26,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-18 20:03:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 112. [2022-11-18 20:03:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.7567567567567566) internal successors, (306), 111 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 306 transitions. [2022-11-18 20:03:26,208 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 306 transitions. Word has length 17 [2022-11-18 20:03:26,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:26,208 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 306 transitions. [2022-11-18 20:03:26,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 306 transitions. [2022-11-18 20:03:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:03:26,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:26,209 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:26,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:03:26,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:26,421 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:26,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2019461234, now seen corresponding path program 4 times [2022-11-18 20:03:26,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:26,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543148144] [2022-11-18 20:03:26,422 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:03:26,422 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 [2022-11-18 20:03:26,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:26,423 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:26,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:26,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:03:26,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:26,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:03:26,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:26,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:26,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:26,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543148144] [2022-11-18 20:03:26,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543148144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:26,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:26,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:03:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875593851] [2022-11-18 20:03:26,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:26,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:03:26,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:26,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:03:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:26,840 INFO L87 Difference]: Start difference. First operand 112 states and 306 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:27,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:27,207 INFO L93 Difference]: Finished difference Result 141 states and 344 transitions. [2022-11-18 20:03:27,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:27,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:03:27,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:27,208 INFO L225 Difference]: With dead ends: 141 [2022-11-18 20:03:27,209 INFO L226 Difference]: Without dead ends: 134 [2022-11-18 20:03:27,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:03:27,209 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:27,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:27,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-18 20:03:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 112. [2022-11-18 20:03:27,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.72972972972973) internal successors, (303), 111 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:27,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 303 transitions. [2022-11-18 20:03:27,225 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 303 transitions. Word has length 17 [2022-11-18 20:03:27,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:27,225 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 303 transitions. [2022-11-18 20:03:27,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 303 transitions. [2022-11-18 20:03:27,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:03:27,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:27,227 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:27,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:27,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:27,440 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:27,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:27,440 INFO L85 PathProgramCache]: Analyzing trace with hash 541106914, now seen corresponding path program 5 times [2022-11-18 20:03:27,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:27,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244805199] [2022-11-18 20:03:27,440 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:03:27,441 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 [2022-11-18 20:03:27,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:27,441 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:27,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:27,606 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 20:03:27,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:27,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:03:27,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:27,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:27,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:27,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244805199] [2022-11-18 20:03:27,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244805199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:27,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:27,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:03:27,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363576413] [2022-11-18 20:03:27,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:27,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:03:27,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:27,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:03:27,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:27,810 INFO L87 Difference]: Start difference. First operand 112 states and 303 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:28,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:28,253 INFO L93 Difference]: Finished difference Result 133 states and 331 transitions. [2022-11-18 20:03:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:28,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:03:28,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:28,255 INFO L225 Difference]: With dead ends: 133 [2022-11-18 20:03:28,255 INFO L226 Difference]: Without dead ends: 124 [2022-11-18 20:03:28,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:03:28,256 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:28,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:03:28,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-18 20:03:28,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2022-11-18 20:03:28,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.7117117117117115) internal successors, (301), 111 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:28,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 301 transitions. [2022-11-18 20:03:28,260 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 301 transitions. Word has length 17 [2022-11-18 20:03:28,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:28,261 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 301 transitions. [2022-11-18 20:03:28,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:28,261 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 301 transitions. [2022-11-18 20:03:28,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:03:28,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:28,261 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:28,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:28,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:28,462 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:28,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1987024613, now seen corresponding path program 1 times [2022-11-18 20:03:28,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:28,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312570659] [2022-11-18 20:03:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:28,463 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 [2022-11-18 20:03:28,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:28,464 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:28,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:28,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:03:28,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:28,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:28,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:28,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312570659] [2022-11-18 20:03:28,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312570659] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:28,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:03:28,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:03:28,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113011710] [2022-11-18 20:03:28,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:28,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:03:28,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:28,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:03:28,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:03:28,863 INFO L87 Difference]: Start difference. First operand 112 states and 301 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:29,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:29,289 INFO L93 Difference]: Finished difference Result 140 states and 361 transitions. [2022-11-18 20:03:29,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:29,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:03:29,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:29,291 INFO L225 Difference]: With dead ends: 140 [2022-11-18 20:03:29,291 INFO L226 Difference]: Without dead ends: 140 [2022-11-18 20:03:29,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:03:29,291 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:29,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:03:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-18 20:03:29,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 118. [2022-11-18 20:03:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.735042735042735) internal successors, (320), 117 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 320 transitions. [2022-11-18 20:03:29,297 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 320 transitions. Word has length 18 [2022-11-18 20:03:29,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:29,297 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 320 transitions. [2022-11-18 20:03:29,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:29,298 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 320 transitions. [2022-11-18 20:03:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:03:29,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:29,299 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:29,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:03:29,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:29,511 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:29,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:29,511 INFO L85 PathProgramCache]: Analyzing trace with hash 755785499, now seen corresponding path program 2 times [2022-11-18 20:03:29,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:29,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916769749] [2022-11-18 20:03:29,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:03:29,512 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 [2022-11-18 20:03:29,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:29,513 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:29,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:29,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:03:29,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:29,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:03:29,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:29,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:30,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:30,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916769749] [2022-11-18 20:03:30,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916769749] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:30,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:03:30,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-18 20:03:30,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392028144] [2022-11-18 20:03:30,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:30,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:03:30,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:30,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:03:30,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:03:30,216 INFO L87 Difference]: Start difference. First operand 118 states and 320 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:30,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:30,683 INFO L93 Difference]: Finished difference Result 152 states and 390 transitions. [2022-11-18 20:03:30,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:30,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:03:30,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:30,685 INFO L225 Difference]: With dead ends: 152 [2022-11-18 20:03:30,685 INFO L226 Difference]: Without dead ends: 152 [2022-11-18 20:03:30,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:03:30,686 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:30,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-18 20:03:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 118. [2022-11-18 20:03:30,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.735042735042735) internal successors, (320), 117 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 320 transitions. [2022-11-18 20:03:30,691 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 320 transitions. Word has length 18 [2022-11-18 20:03:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:30,691 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 320 transitions. [2022-11-18 20:03:30,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 320 transitions. [2022-11-18 20:03:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:03:30,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:30,692 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:30,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:30,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:30,905 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:30,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:30,905 INFO L85 PathProgramCache]: Analyzing trace with hash -449017427, now seen corresponding path program 1 times [2022-11-18 20:03:30,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:30,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680205682] [2022-11-18 20:03:30,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:30,906 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 [2022-11-18 20:03:30,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:30,907 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:30,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:03:31,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:31,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:31,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:31,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680205682] [2022-11-18 20:03:31,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680205682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:31,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:31,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:03:31,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458329669] [2022-11-18 20:03:31,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:31,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:03:31,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:31,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:03:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:03:31,300 INFO L87 Difference]: Start difference. First operand 118 states and 320 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:31,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:31,595 INFO L93 Difference]: Finished difference Result 148 states and 383 transitions. [2022-11-18 20:03:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:31,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:03:31,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:31,597 INFO L225 Difference]: With dead ends: 148 [2022-11-18 20:03:31,597 INFO L226 Difference]: Without dead ends: 148 [2022-11-18 20:03:31,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:03:31,598 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:31,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-18 20:03:31,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2022-11-18 20:03:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.7560975609756095) internal successors, (339), 123 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 339 transitions. [2022-11-18 20:03:31,603 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 339 transitions. Word has length 18 [2022-11-18 20:03:31,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:31,603 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 339 transitions. [2022-11-18 20:03:31,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:31,603 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 339 transitions. [2022-11-18 20:03:31,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:03:31,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:31,604 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:31,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:31,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:31,805 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:31,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:31,805 INFO L85 PathProgramCache]: Analyzing trace with hash -78356631, now seen corresponding path program 3 times [2022-11-18 20:03:31,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:31,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049021418] [2022-11-18 20:03:31,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:03:31,806 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 [2022-11-18 20:03:31,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:31,808 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:31,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:32,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:03:32,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:32,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:03:32,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:32,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:32,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:32,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049021418] [2022-11-18 20:03:32,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049021418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:32,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:32,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:03:32,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713938914] [2022-11-18 20:03:32,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:32,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:03:32,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:32,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:03:32,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:03:32,188 INFO L87 Difference]: Start difference. First operand 124 states and 339 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:32,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:32,508 INFO L93 Difference]: Finished difference Result 148 states and 381 transitions. [2022-11-18 20:03:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:32,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:03:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:32,510 INFO L225 Difference]: With dead ends: 148 [2022-11-18 20:03:32,511 INFO L226 Difference]: Without dead ends: 146 [2022-11-18 20:03:32,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:32,511 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:32,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-18 20:03:32,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 124. [2022-11-18 20:03:32,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.7398373983739837) internal successors, (337), 123 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 337 transitions. [2022-11-18 20:03:32,516 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 337 transitions. Word has length 18 [2022-11-18 20:03:32,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:32,517 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 337 transitions. [2022-11-18 20:03:32,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:32,517 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 337 transitions. [2022-11-18 20:03:32,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:03:32,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:32,518 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:32,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:32,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:32,731 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:32,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:32,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2006805913, now seen corresponding path program 4 times [2022-11-18 20:03:32,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:32,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352170086] [2022-11-18 20:03:32,731 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:03:32,731 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 [2022-11-18 20:03:32,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:32,732 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:32,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:32,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:03:32,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:32,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:03:32,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:33,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:33,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:33,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352170086] [2022-11-18 20:03:33,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352170086] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:33,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:03:33,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-18 20:03:33,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516140918] [2022-11-18 20:03:33,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:33,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:03:33,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:33,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:03:33,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:03:33,412 INFO L87 Difference]: Start difference. First operand 124 states and 337 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:33,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:33,880 INFO L93 Difference]: Finished difference Result 128 states and 334 transitions. [2022-11-18 20:03:33,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:33,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:03:33,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:33,882 INFO L225 Difference]: With dead ends: 128 [2022-11-18 20:03:33,882 INFO L226 Difference]: Without dead ends: 128 [2022-11-18 20:03:33,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:03:33,883 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:33,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:03:33,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-18 20:03:33,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 114. [2022-11-18 20:03:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.663716814159292) internal successors, (301), 113 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 301 transitions. [2022-11-18 20:03:33,887 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 301 transitions. Word has length 18 [2022-11-18 20:03:33,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:33,888 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 301 transitions. [2022-11-18 20:03:33,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:33,888 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 301 transitions. [2022-11-18 20:03:33,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:03:33,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:33,889 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:33,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:34,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:34,101 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:34,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:34,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1083358457, now seen corresponding path program 2 times [2022-11-18 20:03:34,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:34,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486544545] [2022-11-18 20:03:34,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:03:34,103 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 [2022-11-18 20:03:34,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:34,103 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:34,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:34,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:03:34,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:34,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:03:34,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:34,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:34,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:34,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486544545] [2022-11-18 20:03:34,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486544545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:34,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:34,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:03:34,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529298718] [2022-11-18 20:03:34,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:34,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:03:34,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:34,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:03:34,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:03:34,422 INFO L87 Difference]: Start difference. First operand 114 states and 301 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:34,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:34,724 INFO L93 Difference]: Finished difference Result 144 states and 364 transitions. [2022-11-18 20:03:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:34,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:03:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:34,726 INFO L225 Difference]: With dead ends: 144 [2022-11-18 20:03:34,727 INFO L226 Difference]: Without dead ends: 144 [2022-11-18 20:03:34,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:03:34,727 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:34,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-18 20:03:34,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 114. [2022-11-18 20:03:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.663716814159292) internal successors, (301), 113 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 301 transitions. [2022-11-18 20:03:34,732 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 301 transitions. Word has length 18 [2022-11-18 20:03:34,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:34,733 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 301 transitions. [2022-11-18 20:03:34,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 301 transitions. [2022-11-18 20:03:34,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:03:34,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:34,734 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:34,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:34,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:34,943 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:34,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:34,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1082763811, now seen corresponding path program 3 times [2022-11-18 20:03:34,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:34,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956284234] [2022-11-18 20:03:34,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:03:34,944 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 [2022-11-18 20:03:34,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:34,945 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:34,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:35,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:03:35,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:35,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:03:35,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:35,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:35,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:35,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956284234] [2022-11-18 20:03:35,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956284234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:35,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:35,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:03:35,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502793031] [2022-11-18 20:03:35,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:35,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:03:35,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:35,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:03:35,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:03:35,260 INFO L87 Difference]: Start difference. First operand 114 states and 301 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:35,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:35,541 INFO L93 Difference]: Finished difference Result 118 states and 304 transitions. [2022-11-18 20:03:35,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:35,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:03:35,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:35,546 INFO L225 Difference]: With dead ends: 118 [2022-11-18 20:03:35,547 INFO L226 Difference]: Without dead ends: 114 [2022-11-18 20:03:35,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:35,547 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:35,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:03:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-18 20:03:35,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2022-11-18 20:03:35,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.6486486486486487) internal successors, (294), 111 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:35,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 294 transitions. [2022-11-18 20:03:35,552 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 294 transitions. Word has length 18 [2022-11-18 20:03:35,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:35,552 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 294 transitions. [2022-11-18 20:03:35,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:35,552 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 294 transitions. [2022-11-18 20:03:35,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:03:35,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:35,553 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:35,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:35,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:35,763 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:35,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1980280207, now seen corresponding path program 4 times [2022-11-18 20:03:35,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:35,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842929652] [2022-11-18 20:03:35,764 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:03:35,764 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 [2022-11-18 20:03:35,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:35,765 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:35,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:35,941 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:03:35,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:35,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:03:35,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:36,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:36,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:36,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842929652] [2022-11-18 20:03:36,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842929652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:36,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:36,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:03:36,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8508211] [2022-11-18 20:03:36,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:36,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:03:36,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:36,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:03:36,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:03:36,037 INFO L87 Difference]: Start difference. First operand 112 states and 294 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:36,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:36,368 INFO L93 Difference]: Finished difference Result 112 states and 286 transitions. [2022-11-18 20:03:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:36,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:03:36,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:36,375 INFO L225 Difference]: With dead ends: 112 [2022-11-18 20:03:36,375 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 20:03:36,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:03:36,376 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:36,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:36,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 20:03:36,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 104. [2022-11-18 20:03:36,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.563106796116505) internal successors, (264), 103 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 264 transitions. [2022-11-18 20:03:36,379 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 264 transitions. Word has length 18 [2022-11-18 20:03:36,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:36,379 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 264 transitions. [2022-11-18 20:03:36,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:36,380 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 264 transitions. [2022-11-18 20:03:36,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:03:36,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:36,380 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:36,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:36,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:03:36,581 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:03:36,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:36,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1347793704, now seen corresponding path program 1 times [2022-11-18 20:03:36,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:36,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678074777] [2022-11-18 20:03:36,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:36,582 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 [2022-11-18 20:03:36,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:36,583 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:36,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:03:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:03:36,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:36,818 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 26 treesize of output 24 [2022-11-18 20:03:37,450 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 144 treesize of output 116 [2022-11-18 20:03:37,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:03:37,829 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 455 treesize of output 169 [2022-11-18 20:03:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:41,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:45,122 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvslt c_~result_3~0 (_ bv0 32))) (.cse3 (bvadd (_ bv3 32) c_~nondet_0~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~nondet_0~0.offset)) (.cse5 (bvadd (_ bv1 32) c_~nondet_0~0.offset)) (.cse0 (= c_~name_2~0 c_~name_1~0))) (and (or (not .cse0) (and .cse1 (forall ((v_ArrVal_962 (Array (_ BitVec 32) (_ BitVec 8)))) (= c_~name_2~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_962) c_~nondet_0~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~nondet_0~0.offset))))))) (or (let ((.cse6 (bvsgt c_~result_3~0 (_ bv0 32)))) (and (or .cse6 (forall ((v_ArrVal_962 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_962) c_~nondet_0~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~nondet_0~0.offset))) c_~name_1~0)))) (or (forall ((v_ArrVal_962 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= c_~name_2~0 (let ((.cse8 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_962) c_~nondet_0~0.base))) (concat (concat (concat (select .cse8 .cse3) (select .cse8 .cse4)) (select .cse8 .cse5)) (select .cse8 c_~nondet_0~0.offset)))))) .cse1) (or (not (bvsge ((_ sign_extend 32) c_~name_2~0) (bvadd (_ bv18446744071562067968 64) ((_ sign_extend 32) c_~name_1~0)))) (let ((.cse9 (bvslt (bvadd c_~name_2~0 (bvneg c_~name_1~0)) (_ bv0 32)))) (and (or .cse1 .cse9) (or .cse6 (not .cse9)))) (forall ((v_ArrVal_962 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse10 (let ((.cse11 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_962) c_~nondet_0~0.base))) (concat (concat (concat (select .cse11 .cse3) (select .cse11 .cse4)) (select .cse11 .cse5)) (select .cse11 c_~nondet_0~0.offset))))) (or (= .cse10 c_~name_1~0) (= c_~name_2~0 .cse10)))) (and (not (bvsle c_~name_2~0 (bvadd (_ bv2147483647 32) c_~name_1~0))) (not (bvsge c_~name_1~0 (_ bv0 32))))))) .cse0))) is different from false [2022-11-18 20:03:49,033 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-18 20:03:49,033 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 1159 treesize of output 625 [2022-11-18 20:03:49,083 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:03:49,084 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 418 treesize of output 390 [2022-11-18 20:03:49,113 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:03:49,114 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 376 [2022-11-18 20:03:49,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:03:49,145 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 376 treesize of output 362 [2022-11-18 20:03:49,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:03:49,173 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 362 treesize of output 348 [2022-11-18 20:03:49,203 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:03:49,203 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 348 treesize of output 334 [2022-11-18 20:03:49,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:03:49,236 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 334 treesize of output 320 [2022-11-18 20:15:56,507 WARN L233 SmtUtils]: Spent 11.87m on a formula simplification. DAG size of input: 629 DAG size of output: 117 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:15:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:15:56,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:15:56,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678074777] [2022-11-18 20:15:56,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678074777] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:56,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:56,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 20:15:56,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676435569] [2022-11-18 20:15:56,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:56,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:15:56,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:15:56,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:15:56,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=227, Unknown=2, NotChecked=30, Total=306 [2022-11-18 20:15:56,568 INFO L87 Difference]: Start difference. First operand 104 states and 264 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) 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) [2022-11-18 20:16:07,236 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 85 DAG size of output: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:16:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:09,061 INFO L93 Difference]: Finished difference Result 170 states and 404 transitions. [2022-11-18 20:16:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:16:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) 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 19 [2022-11-18 20:16:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:09,064 INFO L225 Difference]: With dead ends: 170 [2022-11-18 20:16:09,064 INFO L226 Difference]: Without dead ends: 156 [2022-11-18 20:16:09,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 732.8s TimeCoverageRelationStatistics Valid=101, Invalid=452, Unknown=3, NotChecked=44, Total=600 [2022-11-18 20:16:09,065 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:09,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 128 Unchecked, 1.1s Time] [2022-11-18 20:16:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-18 20:16:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 112. [2022-11-18 20:16:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.5045045045045047) internal successors, (278), 111 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 278 transitions. [2022-11-18 20:16:09,070 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 278 transitions. Word has length 19 [2022-11-18 20:16:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:09,070 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 278 transitions. [2022-11-18 20:16:09,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) 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) [2022-11-18 20:16:09,070 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 278 transitions. [2022-11-18 20:16:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:16:09,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:09,071 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:09,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:16:09,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:16:09,279 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-18 20:16:09,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:09,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1599112058, now seen corresponding path program 2 times [2022-11-18 20:16:09,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:16:09,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525680021] [2022-11-18 20:16:09,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:16:09,280 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 [2022-11-18 20:16:09,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:16:09,282 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:16:09,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d03755-016e-46f4-b8db-698c0c3af005/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:16:09,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:16:09,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:16:09,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 20:16:09,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:09,580 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 [2022-11-18 20:16:10,811 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 179 treesize of output 151 [2022-11-18 20:16:11,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:16:11,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:11,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:11,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:16:11,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:16:11,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:11,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:11,834 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:16:11,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 467 treesize of output 191 [2022-11-18 20:16:20,441 WARN L233 SmtUtils]: Spent 8.38s on a formula simplification. DAG size of input: 55 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:16:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:16:20,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:24,226 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (bvslt c_~result_3~0 (_ bv0 32))) (.cse1 (bvadd (_ bv3 32) c_~nondet_0~0.offset)) (.cse2 (bvadd (_ bv2 32) c_~nondet_0~0.offset)) (.cse3 (bvadd (_ bv1 32) c_~nondet_0~0.offset)) (.cse6 (= c_~name_2~0 c_~name_1~0))) (and (or (and (or (bvsgt c_~result_3~0 (_ bv0 32)) (forall ((v_ArrVal_1002 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1002) c_~nondet_0~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 c_~nondet_0~0.offset))) c_~name_1~0)))) (or (forall ((v_ArrVal_1002 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= c_~name_2~0 (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1002) c_~nondet_0~0.base))) (concat (concat (concat (select .cse4 .cse1) (select .cse4 .cse2)) (select .cse4 .cse3)) (select .cse4 c_~nondet_0~0.offset)))))) .cse5)) .cse6) (or (and .cse5 (forall ((v_ArrVal_1002 (Array (_ BitVec 32) (_ BitVec 8)))) (= c_~name_2~0 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1002) c_~nondet_0~0.base))) (concat (concat (concat (select .cse7 .cse1) (select .cse7 .cse2)) (select .cse7 .cse3)) (select .cse7 c_~nondet_0~0.offset)))))) (not .cse6)))) is different from false [2022-11-18 20:16:27,572 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-18 20:16:27,572 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 794 treesize of output 444 [2022-11-18 20:16:27,602 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:16:27,603 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 289 treesize of output 275 [2022-11-18 20:16:27,636 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:16:27,637 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 275 treesize of output 261 [2022-11-18 20:16:27,666 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:16:27,666 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 261 treesize of output 247 [2022-11-18 20:16:27,695 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:16:27,696 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 247 treesize of output 233 [2022-11-18 20:16:27,723 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:16:27,724 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 233 treesize of output 219