./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 238e609d3671ff2de494998b0abc6a14651375b5eb423e7b66fc3d987b466268 --- 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 20:05:18,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:05:18,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:05:18,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:05:18,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:05:18,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:05:18,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:05:18,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:05:18,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:05:18,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:05:18,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:05:18,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:05:18,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:05:18,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:05:18,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:05:18,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:05:18,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:05:18,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:05:18,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:05:18,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:05:18,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:05:18,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:05:18,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:05:18,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:05:18,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:05:18,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:05:18,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:05:18,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:05:18,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:05:18,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:05:18,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:05:18,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:05:18,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:05:18,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:05:18,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:05:18,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:05:18,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:05:18,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:05:18,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:05:18,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:05:18,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:05:18,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:05:18,780 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:05:18,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:05:18,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:05:18,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:05:18,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:05:18,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:05:18,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:05:18,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:05:18,795 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:05:18,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:05:18,797 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:05:18,797 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:05:18,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:05:18,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:05:18,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:05:18,798 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:05:18,798 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:05:18,798 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:05:18,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:05:18,799 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:05:18,799 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:05:18,799 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:05:18,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:05:18,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:05:18,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:05:18,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:05:18,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:05:18,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:05:18,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:05:18,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:05:18,801 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_8904afa1-1070-4705-a7a2-6f5c94d8571a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 238e609d3671ff2de494998b0abc6a14651375b5eb423e7b66fc3d987b466268 [2022-11-18 20:05:19,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:05:19,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:05:19,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:05:19,177 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:05:19,178 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:05:19,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2022-11-18 20:05:19,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/data/0f8e6b23a/e0b5119223bc4306a5747446845c8664/FLAG6a3c4e515 [2022-11-18 20:05:19,743 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:05:19,743 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2022-11-18 20:05:19,765 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/data/0f8e6b23a/e0b5119223bc4306a5747446845c8664/FLAG6a3c4e515 [2022-11-18 20:05:20,089 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/data/0f8e6b23a/e0b5119223bc4306a5747446845c8664 [2022-11-18 20:05:20,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:05:20,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:05:20,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:05:20,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:05:20,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:05:20,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:20,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7809614d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20, skipping insertion in model container [2022-11-18 20:05:20,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:05:20" (1/1) ... [2022-11-18 20:05:20,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:05:20,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:05:20,382 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_8904afa1-1070-4705-a7a2-6f5c94d8571a/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c[3107,3120] [2022-11-18 20:05:20,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:05:20,405 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 20:05:20,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1837d1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:20, skipping insertion in model container [2022-11-18 20:05:20,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:05:20,407 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 20:05:20,408 INFO L158 Benchmark]: Toolchain (without parser) took 313.56ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 94.7MB in the end (delta: -12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:05:20,409 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory was 87.6MB in the beginning and 87.5MB in the end (delta: 24.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:05:20,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.43ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 94.7MB in the end (delta: -13.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:05:20,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory was 87.6MB in the beginning and 87.5MB in the end (delta: 24.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.43ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 94.7MB in the end (delta: -13.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 126]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 238e609d3671ff2de494998b0abc6a14651375b5eb423e7b66fc3d987b466268 --- 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 20:05:22,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:05:22,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:05:22,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:05:22,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:05:22,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:05:22,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:05:22,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:05:22,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:05:22,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:05:22,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:05:22,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:05:22,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:05:22,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:05:22,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:05:22,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:05:22,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:05:22,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:05:22,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:05:22,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:05:22,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:05:22,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:05:22,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:05:22,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:05:22,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:05:22,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:05:22,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:05:22,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:05:22,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:05:22,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:05:22,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:05:22,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:05:22,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:05:22,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:05:22,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:05:22,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:05:22,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:05:22,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:05:22,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:05:22,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:05:22,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:05:22,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 20:05:22,943 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:05:22,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:05:22,945 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:05:22,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:05:22,947 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:05:22,947 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:05:22,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:05:22,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:05:22,949 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:05:22,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:05:22,951 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:05:22,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:05:22,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:05:22,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:05:22,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:05:22,953 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:05:22,953 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:05:22,953 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:05:22,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:05:22,954 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:05:22,954 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 20:05:22,954 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 20:05:22,954 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:05:22,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:05:22,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:05:22,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:05:22,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:05:22,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:05:22,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:05:22,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:05:22,957 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 20:05:22,957 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 20:05:22,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 20:05:22,958 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_8904afa1-1070-4705-a7a2-6f5c94d8571a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 238e609d3671ff2de494998b0abc6a14651375b5eb423e7b66fc3d987b466268 [2022-11-18 20:05:23,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:05:23,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:05:23,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:05:23,383 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:05:23,386 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:05:23,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2022-11-18 20:05:23,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/data/458fd4713/fb0c4f9f89fb45f5bd5b32f5be8e7640/FLAGd96a5d04d [2022-11-18 20:05:24,044 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:05:24,044 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2022-11-18 20:05:24,055 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/data/458fd4713/fb0c4f9f89fb45f5bd5b32f5be8e7640/FLAGd96a5d04d [2022-11-18 20:05:24,358 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/data/458fd4713/fb0c4f9f89fb45f5bd5b32f5be8e7640 [2022-11-18 20:05:24,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:05:24,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:05:24,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:05:24,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:05:24,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:05:24,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:05:24" (1/1) ... [2022-11-18 20:05:24,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf81309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24, skipping insertion in model container [2022-11-18 20:05:24,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:05:24" (1/1) ... [2022-11-18 20:05:24,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:05:24,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:05:24,626 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_8904afa1-1070-4705-a7a2-6f5c94d8571a/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c[3107,3120] [2022-11-18 20:05:24,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:05:24,718 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 20:05:24,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:05:24,754 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_8904afa1-1070-4705-a7a2-6f5c94d8571a/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c[3107,3120] [2022-11-18 20:05:24,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:05:24,777 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:05:24,824 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_8904afa1-1070-4705-a7a2-6f5c94d8571a/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c[3107,3120] [2022-11-18 20:05:24,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:05:24,846 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:05:24,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24 WrapperNode [2022-11-18 20:05:24,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:05:24,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:05:24,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:05:24,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:05:24,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24" (1/1) ... [2022-11-18 20:05:24,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24" (1/1) ... [2022-11-18 20:05:24,925 INFO L138 Inliner]: procedures = 27, calls = 52, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 158 [2022-11-18 20:05:24,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:05:24,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:05:24,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:05:24,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:05:24,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24" (1/1) ... [2022-11-18 20:05:24,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24" (1/1) ... [2022-11-18 20:05:24,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24" (1/1) ... [2022-11-18 20:05:24,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24" (1/1) ... [2022-11-18 20:05:24,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24" (1/1) ... [2022-11-18 20:05:24,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24" (1/1) ... [2022-11-18 20:05:24,989 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24" (1/1) ... [2022-11-18 20:05:24,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24" (1/1) ... [2022-11-18 20:05:24,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:05:24,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:05:24,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:05:24,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:05:24,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24" (1/1) ... [2022-11-18 20:05:25,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:05:25,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:25,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:05:25,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:05:25,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:05:25,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 20:05:25,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:05:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 20:05:25,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:05:25,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:05:25,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:05:25,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:05:25,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:05:25,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:05:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:05:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:05:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:05:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:05:25,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:05:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:05:25,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 20:05:25,105 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 20:05:25,276 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:05:25,279 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:05:25,935 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:05:26,219 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:05:26,220 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:05:26,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:05:26 BoogieIcfgContainer [2022-11-18 20:05:26,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:05:26,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:05:26,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:05:26,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:05:26,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:05:24" (1/3) ... [2022-11-18 20:05:26,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a804be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:05:26, skipping insertion in model container [2022-11-18 20:05:26,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:24" (2/3) ... [2022-11-18 20:05:26,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a804be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:05:26, skipping insertion in model container [2022-11-18 20:05:26,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:05:26" (3/3) ... [2022-11-18 20:05:26,237 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2022-11-18 20:05:26,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:05:26,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-18 20:05:26,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:05:26,430 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:05:26,472 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 20:05:26,488 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 163 transitions, 350 flow [2022-11-18 20:05:26,491 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 163 transitions, 350 flow [2022-11-18 20:05:26,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 350 flow [2022-11-18 20:05:26,571 INFO L130 PetriNetUnfolder]: 10/160 cut-off events. [2022-11-18 20:05:26,571 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:05:26,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 160 events. 10/160 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 128. Up to 2 conditions per place. [2022-11-18 20:05:26,581 INFO L119 LiptonReduction]: Number of co-enabled transitions 2120 [2022-11-18 20:06:00,249 INFO L134 LiptonReduction]: Checked pairs total: 3739 [2022-11-18 20:06:00,250 INFO L136 LiptonReduction]: Total number of compositions: 161 [2022-11-18 20:06:00,258 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 49 transitions, 122 flow [2022-11-18 20:06:00,340 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 682 states, 584 states have (on average 3.518835616438356) internal successors, (2055), 681 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states 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 20:06:00,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:06:00,375 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;@79a96d8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:06:00,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-18 20:06:00,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 682 states, 584 states have (on average 3.518835616438356) internal successors, (2055), 681 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states 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 20:06:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:06:00,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:00,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:06:00,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:00,393 INFO L85 PathProgramCache]: Analyzing trace with hash 22098, now seen corresponding path program 1 times [2022-11-18 20:06:00,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:00,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254987957] [2022-11-18 20:06:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:00,409 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 20:06:00,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:00,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:00,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:00,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:06:00,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:00,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:00,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:00,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:00,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:00,864 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 20:06:00,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2022-11-18 20:06:00,929 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-18 20:06:00,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-18 20:06:01,063 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 20:06:01,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:01,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:01,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254987957] [2022-11-18 20:06:01,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254987957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:01,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:01,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:06:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252789641] [2022-11-18 20:06:01,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:01,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:01,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:01,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:01,115 INFO L87 Difference]: Start difference. First operand has 682 states, 584 states have (on average 3.518835616438356) internal successors, (2055), 681 states have internal predecessors, (2055), 0 states have call successors, (0), 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 20:06:01,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:01,369 INFO L93 Difference]: Finished difference Result 682 states and 2059 transitions. [2022-11-18 20:06:01,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:01,372 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 20:06:01,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:01,393 INFO L225 Difference]: With dead ends: 682 [2022-11-18 20:06:01,394 INFO L226 Difference]: Without dead ends: 682 [2022-11-18 20:06:01,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:01,398 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:01,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2022-11-18 20:06:01,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-11-18 20:06:01,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2022-11-18 20:06:01,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 585 states have (on average 3.5196581196581196) internal successors, (2059), 681 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states 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 20:06:01,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 2059 transitions. [2022-11-18 20:06:01,559 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 2059 transitions. Word has length 2 [2022-11-18 20:06:01,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:01,561 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 2059 transitions. [2022-11-18 20:06:01,563 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 20:06:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 2059 transitions. [2022-11-18 20:06:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:06:01,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:01,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:06:01,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:01,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:01,784 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:01,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash 22019, now seen corresponding path program 1 times [2022-11-18 20:06:01,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:01,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903877115] [2022-11-18 20:06:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:01,787 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 20:06:01,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:01,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:01,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:01,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:06:01,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:02,033 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 20:06:02,033 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 20:06:02,059 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 20:06:02,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:02,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:02,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903877115] [2022-11-18 20:06:02,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903877115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:02,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:02,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:06:02,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96364128] [2022-11-18 20:06:02,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:02,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:02,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:02,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:02,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:02,066 INFO L87 Difference]: Start difference. First operand 682 states and 2059 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 20:06:02,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:02,308 INFO L93 Difference]: Finished difference Result 681 states and 2057 transitions. [2022-11-18 20:06:02,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:02,309 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 20:06:02,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:02,315 INFO L225 Difference]: With dead ends: 681 [2022-11-18 20:06:02,315 INFO L226 Difference]: Without dead ends: 681 [2022-11-18 20:06:02,315 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 20:06:02,317 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:02,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:06:02,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-18 20:06:02,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2022-11-18 20:06:02,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 585 states have (on average 3.516239316239316) internal successors, (2057), 680 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states 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 20:06:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 2057 transitions. [2022-11-18 20:06:02,366 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 2057 transitions. Word has length 2 [2022-11-18 20:06:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:02,367 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 2057 transitions. [2022-11-18 20:06:02,367 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 20:06:02,368 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 2057 transitions. [2022-11-18 20:06:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:06:02,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:02,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:06:02,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:02,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:02,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:02,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:02,584 INFO L85 PathProgramCache]: Analyzing trace with hash 22020, now seen corresponding path program 1 times [2022-11-18 20:06:02,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:02,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468725709] [2022-11-18 20:06:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:02,585 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 20:06:02,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:02,586 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:02,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:02,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:06:02,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:02,904 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 20:06:02,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 20:06:02,947 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 20:06:02,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:02,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:02,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468725709] [2022-11-18 20:06:02,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468725709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:02,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:02,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:06:02,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515009382] [2022-11-18 20:06:02,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:02,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:02,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:02,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:02,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:02,950 INFO L87 Difference]: Start difference. First operand 681 states and 2057 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 20:06:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:03,510 INFO L93 Difference]: Finished difference Result 1357 states and 4103 transitions. [2022-11-18 20:06:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:03,511 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 20:06:03,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:03,522 INFO L225 Difference]: With dead ends: 1357 [2022-11-18 20:06:03,522 INFO L226 Difference]: Without dead ends: 1357 [2022-11-18 20:06:03,523 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 20:06:03,524 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:03,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:06:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2022-11-18 20:06:03,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 681. [2022-11-18 20:06:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 585 states have (on average 3.5145299145299145) internal successors, (2056), 680 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states 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 20:06:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 2056 transitions. [2022-11-18 20:06:03,584 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 2056 transitions. Word has length 2 [2022-11-18 20:06:03,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:03,585 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 2056 transitions. [2022-11-18 20:06:03,585 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 20:06:03,585 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 2056 transitions. [2022-11-18 20:06:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:06:03,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:03,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:06:03,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:03,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:03,798 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:03,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:03,799 INFO L85 PathProgramCache]: Analyzing trace with hash 22100, now seen corresponding path program 1 times [2022-11-18 20:06:03,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:03,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985016540] [2022-11-18 20:06:03,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:03,800 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 20:06:03,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:03,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:03,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:03,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:06:03,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:03,984 INFO L321 Elim1Store]: treesize reduction 115, result has 16.1 percent of original size [2022-11-18 20:06:03,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 47 [2022-11-18 20:06:04,042 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 20:06:04,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:04,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:04,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985016540] [2022-11-18 20:06:04,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985016540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:04,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:04,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:06:04,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735770111] [2022-11-18 20:06:04,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:04,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:04,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:04,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:04,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:04,044 INFO L87 Difference]: Start difference. First operand 681 states and 2056 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 20:06:04,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:04,215 INFO L93 Difference]: Finished difference Result 681 states and 2055 transitions. [2022-11-18 20:06:04,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:04,215 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 20:06:04,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:04,227 INFO L225 Difference]: With dead ends: 681 [2022-11-18 20:06:04,227 INFO L226 Difference]: Without dead ends: 681 [2022-11-18 20:06:04,227 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 20:06:04,228 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:04,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-11-18 20:06:04,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-18 20:06:04,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2022-11-18 20:06:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 585 states have (on average 3.5128205128205128) internal successors, (2055), 680 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states 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 20:06:04,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 2055 transitions. [2022-11-18 20:06:04,252 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 2055 transitions. Word has length 2 [2022-11-18 20:06:04,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:04,252 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 2055 transitions. [2022-11-18 20:06:04,252 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 20:06:04,253 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 2055 transitions. [2022-11-18 20:06:04,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:06:04,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:04,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:06:04,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:04,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:04,465 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:04,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:04,466 INFO L85 PathProgramCache]: Analyzing trace with hash 685188, now seen corresponding path program 1 times [2022-11-18 20:06:04,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:04,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143712534] [2022-11-18 20:06:04,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:04,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:06:04,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:04,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:04,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:04,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:06:04,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:04,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:04,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:04,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:04,793 INFO L321 Elim1Store]: treesize reduction 36, result has 43.8 percent of original size [2022-11-18 20:06:04,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 35 [2022-11-18 20:06:04,826 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-18 20:06:04,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-18 20:06:05,312 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 20:06:05,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:05,576 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 20:06:05,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:05,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143712534] [2022-11-18 20:06:05,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143712534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:05,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:05,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 20:06:05,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655154695] [2022-11-18 20:06:05,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:05,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:06:05,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:05,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:06:05,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:06:05,587 INFO L87 Difference]: Start difference. First operand 681 states and 2055 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 20:06:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:06,523 INFO L93 Difference]: Finished difference Result 683 states and 2063 transitions. [2022-11-18 20:06:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:06:06,524 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 20:06:06,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:06,530 INFO L225 Difference]: With dead ends: 683 [2022-11-18 20:06:06,531 INFO L226 Difference]: Without dead ends: 683 [2022-11-18 20:06:06,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:06:06,532 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 50 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:06,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 18 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 54 Unchecked, 0.6s Time] [2022-11-18 20:06:06,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-11-18 20:06:06,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-11-18 20:06:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 587 states have (on average 3.5144804088586032) internal successors, (2063), 682 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states 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 20:06:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 2063 transitions. [2022-11-18 20:06:06,556 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 2063 transitions. Word has length 3 [2022-11-18 20:06:06,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:06,556 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 2063 transitions. [2022-11-18 20:06:06,557 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 20:06:06,557 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 2063 transitions. [2022-11-18 20:06:06,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:06:06,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:06,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:06:06,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:06,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:06,770 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:06,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash 685110, now seen corresponding path program 1 times [2022-11-18 20:06:06,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:06,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499207895] [2022-11-18 20:06:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:06,771 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 20:06:06,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:06,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:06,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:06,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:06:06,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:07,029 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 20:06:07,030 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 20:06:07,119 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 20:06:07,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:07,395 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 20:06:07,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:07,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499207895] [2022-11-18 20:06:07,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499207895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:07,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:07,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 20:06:07,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262904535] [2022-11-18 20:06:07,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:07,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:06:07,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:07,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:06:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:06:07,399 INFO L87 Difference]: Start difference. First operand 683 states and 2063 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 20:06:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:08,269 INFO L93 Difference]: Finished difference Result 2035 states and 6159 transitions. [2022-11-18 20:06:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:06:08,270 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 20:06:08,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:08,287 INFO L225 Difference]: With dead ends: 2035 [2022-11-18 20:06:08,287 INFO L226 Difference]: Without dead ends: 2035 [2022-11-18 20:06:08,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:06:08,288 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 235 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:08,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 12 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:06:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-11-18 20:06:08,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 684. [2022-11-18 20:06:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 588 states have (on average 3.511904761904762) internal successors, (2065), 683 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states 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 20:06:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 2065 transitions. [2022-11-18 20:06:08,346 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 2065 transitions. Word has length 3 [2022-11-18 20:06:08,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:08,347 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 2065 transitions. [2022-11-18 20:06:08,347 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 20:06:08,347 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 2065 transitions. [2022-11-18 20:06:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:06:08,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:08,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:06:08,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:08,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:08,561 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:08,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:08,562 INFO L85 PathProgramCache]: Analyzing trace with hash 685190, now seen corresponding path program 1 times [2022-11-18 20:06:08,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:08,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590062139] [2022-11-18 20:06:08,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:08,563 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 20:06:08,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:08,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:08,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:08,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:06:08,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:08,752 INFO L321 Elim1Store]: treesize reduction 115, result has 16.1 percent of original size [2022-11-18 20:06:08,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 47 [2022-11-18 20:06:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:06:08,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:08,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:08,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590062139] [2022-11-18 20:06:08,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590062139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:08,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:08,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:06:08,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533365579] [2022-11-18 20:06:08,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:08,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:08,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:08,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:08,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:08,870 INFO L87 Difference]: Start difference. First operand 684 states and 2065 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 20:06:09,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:09,023 INFO L93 Difference]: Finished difference Result 683 states and 2061 transitions. [2022-11-18 20:06:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:09,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 20:06:09,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:09,028 INFO L225 Difference]: With dead ends: 683 [2022-11-18 20:06:09,028 INFO L226 Difference]: Without dead ends: 683 [2022-11-18 20:06:09,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:09,032 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:09,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2022-11-18 20:06:09,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-11-18 20:06:09,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-11-18 20:06:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 588 states have (on average 3.5051020408163267) internal successors, (2061), 682 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states 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 20:06:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 2061 transitions. [2022-11-18 20:06:09,063 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 2061 transitions. Word has length 3 [2022-11-18 20:06:09,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:09,063 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 2061 transitions. [2022-11-18 20:06:09,064 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 20:06:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 2061 transitions. [2022-11-18 20:06:09,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 20:06:09,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:09,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 20:06:09,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:09,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:09,276 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:09,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash 21253102, now seen corresponding path program 1 times [2022-11-18 20:06:09,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:09,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418855569] [2022-11-18 20:06:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:09,277 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 20:06:09,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:09,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:09,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:09,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:06:09,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:09,442 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 20:06:09,442 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 4 case distinctions, treesize of input 29 treesize of output 40 [2022-11-18 20:06:09,547 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 20:06:09,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:09,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:09,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418855569] [2022-11-18 20:06:09,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418855569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:09,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:09,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:06:09,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360128049] [2022-11-18 20:06:09,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:09,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:09,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:09,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:09,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:09,549 INFO L87 Difference]: Start difference. First operand 683 states and 2061 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:09,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:09,689 INFO L93 Difference]: Finished difference Result 686 states and 2071 transitions. [2022-11-18 20:06:09,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:09,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-18 20:06:09,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:09,694 INFO L225 Difference]: With dead ends: 686 [2022-11-18 20:06:09,695 INFO L226 Difference]: Without dead ends: 686 [2022-11-18 20:06:09,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:09,695 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:09,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2022-11-18 20:06:09,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-11-18 20:06:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2022-11-18 20:06:09,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 591 states have (on average 3.504230118443316) internal successors, (2071), 685 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states 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 20:06:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 2071 transitions. [2022-11-18 20:06:09,722 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 2071 transitions. Word has length 4 [2022-11-18 20:06:09,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:09,722 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 2071 transitions. [2022-11-18 20:06:09,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 2071 transitions. [2022-11-18 20:06:09,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 20:06:09,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:09,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 20:06:09,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:09,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:09,937 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:09,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:09,937 INFO L85 PathProgramCache]: Analyzing trace with hash 21253103, now seen corresponding path program 1 times [2022-11-18 20:06:09,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:09,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569924709] [2022-11-18 20:06:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:09,938 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 20:06:09,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:09,939 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:09,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:10,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:06:10,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:10,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:10,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:10,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:10,206 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 20:06:10,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-18 20:06:10,239 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 20:06:10,335 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 20:06:10,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:10,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:10,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569924709] [2022-11-18 20:06:10,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569924709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:10,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:10,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:06:10,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253933735] [2022-11-18 20:06:10,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:10,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:10,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:10,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:10,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:10,337 INFO L87 Difference]: Start difference. First operand 686 states and 2071 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:10,499 INFO L93 Difference]: Finished difference Result 686 states and 2069 transitions. [2022-11-18 20:06:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:10,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-18 20:06:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:10,505 INFO L225 Difference]: With dead ends: 686 [2022-11-18 20:06:10,505 INFO L226 Difference]: Without dead ends: 686 [2022-11-18 20:06:10,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:10,506 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:10,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2022-11-18 20:06:10,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-11-18 20:06:10,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2022-11-18 20:06:10,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 591 states have (on average 3.500846023688663) internal successors, (2069), 685 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states 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 20:06:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 2069 transitions. [2022-11-18 20:06:10,534 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 2069 transitions. Word has length 4 [2022-11-18 20:06:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:10,535 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 2069 transitions. [2022-11-18 20:06:10,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 2069 transitions. [2022-11-18 20:06:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:06:10,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:10,536 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-18 20:06:10,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:10,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:10,749 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:10,750 INFO L85 PathProgramCache]: Analyzing trace with hash 658470468, now seen corresponding path program 2 times [2022-11-18 20:06:10,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:10,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423867380] [2022-11-18 20:06:10,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:06:10,751 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 20:06:10,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:10,752 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:10,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:10,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:06:10,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:10,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:06:10,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:10,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:10,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:10,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:10,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:11,019 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 20:06:11,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2022-11-18 20:06:11,052 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-18 20:06:11,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-18 20:06:11,180 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 20:06:11,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:11,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:11,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423867380] [2022-11-18 20:06:11,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423867380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:11,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:11,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:06:11,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370941022] [2022-11-18 20:06:11,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:11,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:11,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:11,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:11,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:11,182 INFO L87 Difference]: Start difference. First operand 686 states and 2069 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 20:06:11,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:11,366 INFO L93 Difference]: Finished difference Result 685 states and 2067 transitions. [2022-11-18 20:06:11,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:11,366 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 20:06:11,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:11,371 INFO L225 Difference]: With dead ends: 685 [2022-11-18 20:06:11,371 INFO L226 Difference]: Without dead ends: 685 [2022-11-18 20:06:11,372 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 20:06:11,372 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:11,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 37 Unchecked, 0.2s Time] [2022-11-18 20:06:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-11-18 20:06:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2022-11-18 20:06:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 591 states have (on average 3.49746192893401) internal successors, (2067), 684 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states 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 20:06:11,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2067 transitions. [2022-11-18 20:06:11,397 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2067 transitions. Word has length 5 [2022-11-18 20:06:11,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:11,397 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 2067 transitions. [2022-11-18 20:06:11,398 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 20:06:11,398 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2067 transitions. [2022-11-18 20:06:11,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:06:11,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:11,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:06:11,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:11,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:11,615 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:11,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:11,615 INFO L85 PathProgramCache]: Analyzing trace with hash 658482592, now seen corresponding path program 1 times [2022-11-18 20:06:11,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:11,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287318550] [2022-11-18 20:06:11,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:11,616 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 20:06:11,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:11,617 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:11,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:11,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:06:11,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:11,808 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 20:06:11,808 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 4 case distinctions, treesize of input 29 treesize of output 40 [2022-11-18 20:06:11,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:06:11,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:11,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:11,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287318550] [2022-11-18 20:06:11,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287318550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:11,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:11,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:06:11,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068561585] [2022-11-18 20:06:11,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:11,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:11,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:11,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:11,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:11,955 INFO L87 Difference]: Start difference. First operand 685 states and 2067 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 20:06:12,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:12,080 INFO L93 Difference]: Finished difference Result 685 states and 2071 transitions. [2022-11-18 20:06:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:12,081 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 5 [2022-11-18 20:06:12,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:12,086 INFO L225 Difference]: With dead ends: 685 [2022-11-18 20:06:12,086 INFO L226 Difference]: Without dead ends: 685 [2022-11-18 20:06:12,087 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 20:06:12,087 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:12,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2022-11-18 20:06:12,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-11-18 20:06:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2022-11-18 20:06:12,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 591 states have (on average 3.504230118443316) internal successors, (2071), 684 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states 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 20:06:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2071 transitions. [2022-11-18 20:06:12,114 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2071 transitions. Word has length 5 [2022-11-18 20:06:12,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:12,114 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 2071 transitions. [2022-11-18 20:06:12,114 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 20:06:12,115 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2071 transitions. [2022-11-18 20:06:12,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:06:12,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:12,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:06:12,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:12,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:12,327 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:12,328 INFO L85 PathProgramCache]: Analyzing trace with hash 658482593, now seen corresponding path program 1 times [2022-11-18 20:06:12,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:12,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464405702] [2022-11-18 20:06:12,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:12,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:06:12,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:12,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:12,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:12,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:06:12,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:12,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:12,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:12,593 INFO L321 Elim1Store]: treesize reduction 49, result has 38.8 percent of original size [2022-11-18 20:06:12,594 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 3 case distinctions, treesize of input 17 treesize of output 38 [2022-11-18 20:06:12,615 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 20:06:12,902 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 20:06:12,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:13,199 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 20:06:13,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:13,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464405702] [2022-11-18 20:06:13,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464405702] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:13,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:13,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 20:06:13,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655225638] [2022-11-18 20:06:13,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:13,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:06:13,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:13,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:06:13,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:06:13,202 INFO L87 Difference]: Start difference. First operand 685 states and 2071 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:13,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:13,373 INFO L93 Difference]: Finished difference Result 691 states and 2087 transitions. [2022-11-18 20:06:13,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:06:13,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 20:06:13,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:13,378 INFO L225 Difference]: With dead ends: 691 [2022-11-18 20:06:13,378 INFO L226 Difference]: Without dead ends: 691 [2022-11-18 20:06:13,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:06:13,379 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:13,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 19 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 82 Unchecked, 0.2s Time] [2022-11-18 20:06:13,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-11-18 20:06:13,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 685. [2022-11-18 20:06:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 591 states have (on average 3.504230118443316) internal successors, (2071), 684 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states 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 20:06:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2071 transitions. [2022-11-18 20:06:13,403 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2071 transitions. Word has length 5 [2022-11-18 20:06:13,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:13,404 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 2071 transitions. [2022-11-18 20:06:13,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:13,404 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2071 transitions. [2022-11-18 20:06:13,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:06:13,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:13,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:06:13,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:13,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:13,619 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:13,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:13,619 INFO L85 PathProgramCache]: Analyzing trace with hash 658841609, now seen corresponding path program 1 times [2022-11-18 20:06:13,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:13,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284230053] [2022-11-18 20:06:13,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:13,620 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 20:06:13,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:13,621 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:13,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:13,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:06:13,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:13,727 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 20:06:13,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:13,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:13,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284230053] [2022-11-18 20:06:13,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284230053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:13,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:13,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:06:13,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087775382] [2022-11-18 20:06:13,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:13,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:13,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:13,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:13,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:13,730 INFO L87 Difference]: Start difference. First operand 685 states and 2071 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 20:06:14,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:14,027 INFO L93 Difference]: Finished difference Result 909 states and 2652 transitions. [2022-11-18 20:06:14,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:14,027 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 5 [2022-11-18 20:06:14,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:14,033 INFO L225 Difference]: With dead ends: 909 [2022-11-18 20:06:14,033 INFO L226 Difference]: Without dead ends: 909 [2022-11-18 20:06:14,034 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 20:06:14,034 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:14,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 6 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:06:14,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-11-18 20:06:14,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 779. [2022-11-18 20:06:14,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 689 states have (on average 3.4281567489114657) internal successors, (2362), 778 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states 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 20:06:14,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 2362 transitions. [2022-11-18 20:06:14,061 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 2362 transitions. Word has length 5 [2022-11-18 20:06:14,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:14,062 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 2362 transitions. [2022-11-18 20:06:14,062 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 20:06:14,062 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 2362 transitions. [2022-11-18 20:06:14,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:06:14,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:14,063 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-18 20:06:14,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:14,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:14,275 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:14,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:14,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1062251900, now seen corresponding path program 2 times [2022-11-18 20:06:14,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:14,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153984479] [2022-11-18 20:06:14,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:06:14,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:06:14,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:14,277 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:14,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:14,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:06:14,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:14,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:06:14,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:14,525 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 20:06:14,525 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 20:06:14,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:14,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:15,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:15,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153984479] [2022-11-18 20:06:15,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153984479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:15,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:15,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-18 20:06:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389971282] [2022-11-18 20:06:15,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:15,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:06:15,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:06:15,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:06:15,742 INFO L87 Difference]: Start difference. First operand 779 states and 2362 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:22,073 INFO L93 Difference]: Finished difference Result 7697 states and 23462 transitions. [2022-11-18 20:06:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:06:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 20:06:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:22,135 INFO L225 Difference]: With dead ends: 7697 [2022-11-18 20:06:22,135 INFO L226 Difference]: Without dead ends: 7697 [2022-11-18 20:06:22,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:06:22,137 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1102 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:22,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 87 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-18 20:06:22,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7697 states. [2022-11-18 20:06:22,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7697 to 785. [2022-11-18 20:06:22,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 695 states have (on average 3.4158273381294966) internal successors, (2374), 784 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states 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 20:06:22,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2374 transitions. [2022-11-18 20:06:22,276 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2374 transitions. Word has length 6 [2022-11-18 20:06:22,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:22,277 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 2374 transitions. [2022-11-18 20:06:22,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2374 transitions. [2022-11-18 20:06:22,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:06:22,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:22,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:06:22,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:22,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:22,493 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:22,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:22,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1050743410, now seen corresponding path program 1 times [2022-11-18 20:06:22,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:22,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770791969] [2022-11-18 20:06:22,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:22,494 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 20:06:22,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:22,496 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:22,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:22,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:06:22,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:22,634 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 20:06:22,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:22,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:22,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770791969] [2022-11-18 20:06:22,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770791969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:22,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:22,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:06:22,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477947822] [2022-11-18 20:06:22,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:22,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:22,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:22,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:22,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:22,636 INFO L87 Difference]: Start difference. First operand 785 states and 2374 transitions. Second operand has 4 states, 4 states have (on average 1.5) 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 20:06:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:23,130 INFO L93 Difference]: Finished difference Result 821 states and 2355 transitions. [2022-11-18 20:06:23,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:23,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 20:06:23,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:23,134 INFO L225 Difference]: With dead ends: 821 [2022-11-18 20:06:23,135 INFO L226 Difference]: Without dead ends: 819 [2022-11-18 20:06:23,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 20:06:23,136 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 61 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:23,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 0 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:06:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-11-18 20:06:23,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 735. [2022-11-18 20:06:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 632 states have (on average 3.439873417721519) internal successors, (2174), 734 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states 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 20:06:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 2174 transitions. [2022-11-18 20:06:23,164 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 2174 transitions. Word has length 6 [2022-11-18 20:06:23,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:23,164 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 2174 transitions. [2022-11-18 20:06:23,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) 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 20:06:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 2174 transitions. [2022-11-18 20:06:23,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:06:23,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:23,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:06:23,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:23,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:23,390 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:23,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:23,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1050590502, now seen corresponding path program 1 times [2022-11-18 20:06:23,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:23,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247399961] [2022-11-18 20:06:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:23,391 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 20:06:23,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:23,392 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:23,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:23,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:06:23,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:23,576 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 20:06:23,576 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 3 case distinctions, treesize of input 15 treesize of output 29 [2022-11-18 20:06:23,608 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 20:06:23,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:23,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:23,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247399961] [2022-11-18 20:06:23,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247399961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:23,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:23,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:06:23,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529875729] [2022-11-18 20:06:23,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:23,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:23,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:23,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:23,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:23,610 INFO L87 Difference]: Start difference. First operand 735 states and 2174 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:23,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:23,781 INFO L93 Difference]: Finished difference Result 685 states and 2033 transitions. [2022-11-18 20:06:23,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:23,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 20:06:23,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:23,784 INFO L225 Difference]: With dead ends: 685 [2022-11-18 20:06:23,784 INFO L226 Difference]: Without dead ends: 685 [2022-11-18 20:06:23,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:23,785 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:23,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:06:23,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-11-18 20:06:23,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2022-11-18 20:06:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 598 states have (on average 3.399665551839465) internal successors, (2033), 684 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states 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 20:06:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2033 transitions. [2022-11-18 20:06:23,805 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2033 transitions. Word has length 6 [2022-11-18 20:06:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:23,805 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 2033 transitions. [2022-11-18 20:06:23,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2033 transitions. [2022-11-18 20:06:23,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:06:23,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:23,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:06:23,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:24,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:24,019 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:24,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:24,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1050590501, now seen corresponding path program 1 times [2022-11-18 20:06:24,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:24,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668253364] [2022-11-18 20:06:24,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:24,020 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 20:06:24,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:24,021 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:24,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:24,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:06:24,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:24,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:24,262 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-18 20:06:24,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-18 20:06:24,298 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 167 treesize of output 163 [2022-11-18 20:06:24,360 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 20:06:24,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:24,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:24,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668253364] [2022-11-18 20:06:24,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668253364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:24,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:24,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:06:24,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022307970] [2022-11-18 20:06:24,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:24,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:24,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:24,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:24,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:24,362 INFO L87 Difference]: Start difference. First operand 685 states and 2033 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:24,529 INFO L93 Difference]: Finished difference Result 635 states and 1892 transitions. [2022-11-18 20:06:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:24,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 20:06:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:24,532 INFO L225 Difference]: With dead ends: 635 [2022-11-18 20:06:24,532 INFO L226 Difference]: Without dead ends: 635 [2022-11-18 20:06:24,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:24,533 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:24,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:06:24,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-11-18 20:06:24,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2022-11-18 20:06:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 564 states have (on average 3.354609929078014) internal successors, (1892), 634 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states 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 20:06:24,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1892 transitions. [2022-11-18 20:06:24,550 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1892 transitions. Word has length 6 [2022-11-18 20:06:24,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:24,551 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1892 transitions. [2022-11-18 20:06:24,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,551 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1892 transitions. [2022-11-18 20:06:24,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:06:24,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:24,552 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-18 20:06:24,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:24,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:24,764 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:24,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1429944161, now seen corresponding path program 2 times [2022-11-18 20:06:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:24,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154842839] [2022-11-18 20:06:24,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:06:24,765 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 20:06:24,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:24,766 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:24,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:24,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:06:24,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:24,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:06:24,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:24,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:24,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:24,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:24,979 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 20:06:24,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-18 20:06:25,007 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 20:06:25,153 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 20:06:25,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:25,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:25,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154842839] [2022-11-18 20:06:25,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154842839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:25,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:25,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:06:25,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294201937] [2022-11-18 20:06:25,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:25,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:25,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:25,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:25,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:25,160 INFO L87 Difference]: Start difference. First operand 635 states and 1892 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 20:06:25,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:25,327 INFO L93 Difference]: Finished difference Result 633 states and 1889 transitions. [2022-11-18 20:06:25,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:25,327 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 20:06:25,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:25,330 INFO L225 Difference]: With dead ends: 633 [2022-11-18 20:06:25,330 INFO L226 Difference]: Without dead ends: 633 [2022-11-18 20:06:25,331 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 20:06:25,331 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:25,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 31 Unchecked, 0.1s Time] [2022-11-18 20:06:25,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-11-18 20:06:25,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 630. [2022-11-18 20:06:25,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 560 states have (on average 3.3660714285714284) internal successors, (1885), 629 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states 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 20:06:25,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1885 transitions. [2022-11-18 20:06:25,356 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1885 transitions. Word has length 7 [2022-11-18 20:06:25,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:25,357 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1885 transitions. [2022-11-18 20:06:25,357 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 20:06:25,357 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1885 transitions. [2022-11-18 20:06:25,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:06:25,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:25,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:25,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:25,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:25,572 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:25,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:25,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1791431509, now seen corresponding path program 1 times [2022-11-18 20:06:25,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:25,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757872248] [2022-11-18 20:06:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:25,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:06:25,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:25,574 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:25,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:25,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:06:25,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:25,790 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 20:06:25,791 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 20:06:25,825 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 20:06:25,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:25,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:25,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757872248] [2022-11-18 20:06:25,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757872248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:25,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:25,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:06:25,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334053645] [2022-11-18 20:06:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:25,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:25,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:25,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:25,828 INFO L87 Difference]: Start difference. First operand 630 states and 1885 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 20:06:26,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:26,068 INFO L93 Difference]: Finished difference Result 408 states and 1179 transitions. [2022-11-18 20:06:26,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:06:26,069 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 7 [2022-11-18 20:06:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:26,071 INFO L225 Difference]: With dead ends: 408 [2022-11-18 20:06:26,071 INFO L226 Difference]: Without dead ends: 408 [2022-11-18 20:06:26,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 20:06:26,072 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:26,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:06:26,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-11-18 20:06:26,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2022-11-18 20:06:26,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 375 states have (on average 3.144) internal successors, (1179), 407 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states 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 20:06:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1179 transitions. [2022-11-18 20:06:26,086 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1179 transitions. Word has length 7 [2022-11-18 20:06:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:26,087 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 1179 transitions. [2022-11-18 20:06:26,087 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 20:06:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1179 transitions. [2022-11-18 20:06:26,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:06:26,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:26,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:26,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:26,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:26,302 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:26,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:26,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1791431511, now seen corresponding path program 1 times [2022-11-18 20:06:26,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:26,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261383905] [2022-11-18 20:06:26,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:26,303 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 20:06:26,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:26,304 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:26,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:26,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:06:26,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:26,475 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 20:06:26,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:26,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:26,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261383905] [2022-11-18 20:06:26,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261383905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:26,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:26,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:06:26,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188457037] [2022-11-18 20:06:26,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:26,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:26,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:26,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:26,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:26,478 INFO L87 Difference]: Start difference. First operand 408 states and 1179 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 20:06:26,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:26,788 INFO L93 Difference]: Finished difference Result 511 states and 1392 transitions. [2022-11-18 20:06:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:06:26,788 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 7 [2022-11-18 20:06:26,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:26,791 INFO L225 Difference]: With dead ends: 511 [2022-11-18 20:06:26,791 INFO L226 Difference]: Without dead ends: 507 [2022-11-18 20:06:26,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 20:06:26,792 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:26,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 9 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:06:26,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-18 20:06:26,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 473. [2022-11-18 20:06:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 440 states have (on average 3.0318181818181817) internal successors, (1334), 472 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states 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 20:06:26,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1334 transitions. [2022-11-18 20:06:26,811 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1334 transitions. Word has length 7 [2022-11-18 20:06:26,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:26,812 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 1334 transitions. [2022-11-18 20:06:26,812 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 20:06:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1334 transitions. [2022-11-18 20:06:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 20:06:26,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:26,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:26,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:27,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:27,037 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:27,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1739719781, now seen corresponding path program 1 times [2022-11-18 20:06:27,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:27,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136662699] [2022-11-18 20:06:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:27,038 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 20:06:27,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:27,039 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:27,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:27,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:06:27,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:27,323 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 20:06:27,323 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 20:06:27,550 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 20:06:27,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:29,164 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 20:06:29,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:29,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136662699] [2022-11-18 20:06:29,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136662699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:29,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:29,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 20:06:29,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644581107] [2022-11-18 20:06:29,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:29,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:06:29,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:29,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:06:29,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:06:29,166 INFO L87 Difference]: Start difference. First operand 473 states and 1334 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 20:06:30,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:30,378 INFO L93 Difference]: Finished difference Result 503 states and 1421 transitions. [2022-11-18 20:06:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:06:30,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 20:06:30,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:30,382 INFO L225 Difference]: With dead ends: 503 [2022-11-18 20:06:30,382 INFO L226 Difference]: Without dead ends: 503 [2022-11-18 20:06:30,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:06:30,384 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:30,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 26 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 89 Unchecked, 0.3s Time] [2022-11-18 20:06:30,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-18 20:06:30,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2022-11-18 20:06:30,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 470 states have (on average 3.023404255319149) internal successors, (1421), 502 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states 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 20:06:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 1421 transitions. [2022-11-18 20:06:30,402 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 1421 transitions. Word has length 8 [2022-11-18 20:06:30,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:30,403 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 1421 transitions. [2022-11-18 20:06:30,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 20:06:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 1421 transitions. [2022-11-18 20:06:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 20:06:30,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:30,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:30,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:30,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:30,618 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:30,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:30,619 INFO L85 PathProgramCache]: Analyzing trace with hash -300142805, now seen corresponding path program 1 times [2022-11-18 20:06:30,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:30,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808968948] [2022-11-18 20:06:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:30,619 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 20:06:30,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:30,620 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:30,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:30,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:06:30,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:30,785 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 20:06:30,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:30,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:30,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808968948] [2022-11-18 20:06:30,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808968948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:30,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:30,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:06:30,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330187826] [2022-11-18 20:06:30,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:30,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:30,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:30,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:30,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:30,788 INFO L87 Difference]: Start difference. First operand 503 states and 1421 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:30,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:30,947 INFO L93 Difference]: Finished difference Result 415 states and 1135 transitions. [2022-11-18 20:06:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:30,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 20:06:30,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:30,950 INFO L225 Difference]: With dead ends: 415 [2022-11-18 20:06:30,950 INFO L226 Difference]: Without dead ends: 415 [2022-11-18 20:06:30,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 20:06:30,951 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:30,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:06:30,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-11-18 20:06:30,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2022-11-18 20:06:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 391 states have (on average 2.9028132992327365) internal successors, (1135), 414 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states 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 20:06:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 1135 transitions. [2022-11-18 20:06:30,962 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 1135 transitions. Word has length 8 [2022-11-18 20:06:30,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:30,962 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 1135 transitions. [2022-11-18 20:06:30,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 1135 transitions. [2022-11-18 20:06:30,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 20:06:30,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:30,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:30,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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)] Ended with exit code 0 [2022-11-18 20:06:31,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:31,167 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:31,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:31,167 INFO L85 PathProgramCache]: Analyzing trace with hash -300142804, now seen corresponding path program 1 times [2022-11-18 20:06:31,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:31,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510019981] [2022-11-18 20:06:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:31,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:06:31,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:31,169 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:31,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:06:31,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:31,354 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 20:06:31,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:31,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:31,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510019981] [2022-11-18 20:06:31,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510019981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:31,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:31,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:06:31,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076671482] [2022-11-18 20:06:31,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:31,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:31,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:31,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:31,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:31,357 INFO L87 Difference]: Start difference. First operand 415 states and 1135 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:31,522 INFO L93 Difference]: Finished difference Result 327 states and 849 transitions. [2022-11-18 20:06:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:31,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 20:06:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:31,524 INFO L225 Difference]: With dead ends: 327 [2022-11-18 20:06:31,524 INFO L226 Difference]: Without dead ends: 313 [2022-11-18 20:06:31,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 20:06:31,525 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:31,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:06:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-18 20:06:31,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-11-18 20:06:31,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 298 states have (on average 2.728187919463087) internal successors, (813), 312 states have internal predecessors, (813), 0 states have call successors, (0), 0 states 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 20:06:31,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 813 transitions. [2022-11-18 20:06:31,534 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 813 transitions. Word has length 8 [2022-11-18 20:06:31,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:31,534 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 813 transitions. [2022-11-18 20:06:31,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:31,535 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 813 transitions. [2022-11-18 20:06:31,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:06:31,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:31,535 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:31,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:31,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:31,747 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:31,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:31,747 INFO L85 PathProgramCache]: Analyzing trace with hash 136656152, now seen corresponding path program 1 times [2022-11-18 20:06:31,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:31,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143279056] [2022-11-18 20:06:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:31,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:06:31,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:31,749 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:31,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:06:31,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:06:31,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:31,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:31,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143279056] [2022-11-18 20:06:31,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143279056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:31,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:31,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:06:31,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343736776] [2022-11-18 20:06:31,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:31,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:31,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:31,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:31,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:31,871 INFO L87 Difference]: Start difference. First operand 313 states and 813 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:32,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:32,092 INFO L93 Difference]: Finished difference Result 321 states and 813 transitions. [2022-11-18 20:06:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:32,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 20:06:32,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:32,093 INFO L225 Difference]: With dead ends: 321 [2022-11-18 20:06:32,093 INFO L226 Difference]: Without dead ends: 321 [2022-11-18 20:06:32,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 20:06:32,094 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:32,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 7 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:06:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-18 20:06:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 305. [2022-11-18 20:06:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 291 states have (on average 2.745704467353952) internal successors, (799), 304 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 20:06:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 799 transitions. [2022-11-18 20:06:32,103 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 799 transitions. Word has length 9 [2022-11-18 20:06:32,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:32,103 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 799 transitions. [2022-11-18 20:06:32,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:32,104 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 799 transitions. [2022-11-18 20:06:32,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:06:32,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:32,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:32,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:32,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:32,316 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:32,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:32,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1903204094, now seen corresponding path program 1 times [2022-11-18 20:06:32,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:32,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380960368] [2022-11-18 20:06:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:32,318 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 20:06:32,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:32,319 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:32,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:32,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:06:32,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:32,586 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 20:06:32,586 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 20:06:32,865 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 20:06:32,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:33,906 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 20:06:33,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:33,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380960368] [2022-11-18 20:06:33,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380960368] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:33,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:33,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 20:06:33,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248078343] [2022-11-18 20:06:33,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:33,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:06:33,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:33,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:06:33,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:06:33,909 INFO L87 Difference]: Start difference. First operand 305 states and 799 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 20:06:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:35,087 INFO L93 Difference]: Finished difference Result 325 states and 873 transitions. [2022-11-18 20:06:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:06:35,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 9 [2022-11-18 20:06:35,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:35,089 INFO L225 Difference]: With dead ends: 325 [2022-11-18 20:06:35,089 INFO L226 Difference]: Without dead ends: 325 [2022-11-18 20:06:35,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:06:35,090 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 23 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:35,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 22 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 69 Unchecked, 0.2s Time] [2022-11-18 20:06:35,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-11-18 20:06:35,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 315. [2022-11-18 20:06:35,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 301 states have (on average 2.777408637873754) internal successors, (836), 314 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 20:06:35,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 836 transitions. [2022-11-18 20:06:35,097 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 836 transitions. Word has length 9 [2022-11-18 20:06:35,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:35,097 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 836 transitions. [2022-11-18 20:06:35,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 20:06:35,097 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 836 transitions. [2022-11-18 20:06:35,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 20:06:35,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:35,098 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:35,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:35,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:35,310 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:35,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:35,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1981291173, now seen corresponding path program 2 times [2022-11-18 20:06:35,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:35,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115522533] [2022-11-18 20:06:35,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:06:35,311 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 20:06:35,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:35,312 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:35,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:35,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:06:35,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:35,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:06:35,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:35,610 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 20:06:35,610 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 20:06:35,766 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 20:06:35,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:35,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:35,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115522533] [2022-11-18 20:06:35,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115522533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:35,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:35,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:06:35,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729992550] [2022-11-18 20:06:35,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:35,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:35,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:35,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:35,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:35,769 INFO L87 Difference]: Start difference. First operand 315 states and 836 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:36,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:36,045 INFO L93 Difference]: Finished difference Result 219 states and 541 transitions. [2022-11-18 20:06:36,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:06:36,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 20:06:36,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:36,046 INFO L225 Difference]: With dead ends: 219 [2022-11-18 20:06:36,046 INFO L226 Difference]: Without dead ends: 219 [2022-11-18 20:06:36,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:36,047 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:36,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:06:36,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-11-18 20:06:36,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 173. [2022-11-18 20:06:36,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 169 states have (on average 2.4497041420118344) internal successors, (414), 172 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 20:06:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 414 transitions. [2022-11-18 20:06:36,052 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 414 transitions. Word has length 10 [2022-11-18 20:06:36,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:36,053 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 414 transitions. [2022-11-18 20:06:36,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:36,053 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 414 transitions. [2022-11-18 20:06:36,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 20:06:36,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:36,054 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-18 20:06:36,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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)] Ended with exit code 0 [2022-11-18 20:06:36,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:36,266 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:06:36,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:36,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1841665348, now seen corresponding path program 3 times [2022-11-18 20:06:36,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:06:36,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211758497] [2022-11-18 20:06:36,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:06:36,267 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 20:06:36,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:06:36,268 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:36,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:06:36,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:06:36,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:36,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:06:36,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:36,725 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 20:06:36,726 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 20:06:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:37,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:41,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:41,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211758497] [2022-11-18 20:06:41,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211758497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:41,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:41,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-18 20:06:41,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888382461] [2022-11-18 20:06:41,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:41,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:06:41,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:41,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:06:41,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:06:41,310 INFO L87 Difference]: Start difference. First operand 173 states and 414 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:08,756 INFO L93 Difference]: Finished difference Result 2783 states and 6998 transitions. [2022-11-18 20:07:08,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:07:08,758 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 20:07:08,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:08,769 INFO L225 Difference]: With dead ends: 2783 [2022-11-18 20:07:08,769 INFO L226 Difference]: Without dead ends: 2783 [2022-11-18 20:07:08,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:07:08,770 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2980 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 2885 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2980 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:08,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2980 Valid, 371 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2885 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-11-18 20:07:08,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2022-11-18 20:07:08,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 185. [2022-11-18 20:07:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 181 states have (on average 2.4198895027624308) internal successors, (438), 184 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 20:07:08,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 438 transitions. [2022-11-18 20:07:08,798 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 438 transitions. Word has length 12 [2022-11-18 20:07:08,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:08,798 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 438 transitions. [2022-11-18 20:07:08,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 438 transitions. [2022-11-18 20:07:08,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:07:08,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:08,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:08,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:09,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:09,015 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:07:09,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:09,016 INFO L85 PathProgramCache]: Analyzing trace with hash 636365336, now seen corresponding path program 1 times [2022-11-18 20:07:09,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:09,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043299055] [2022-11-18 20:07:09,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:09,017 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 20:07:09,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:09,018 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:09,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:09,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:07:09,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:09,252 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 20:07:09,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:09,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:09,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043299055] [2022-11-18 20:07:09,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043299055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:09,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:09,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:07:09,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520058873] [2022-11-18 20:07:09,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:09,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:07:09,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:07:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:07:09,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:07:09,254 INFO L87 Difference]: Start difference. First operand 185 states and 438 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:07:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:09,627 INFO L93 Difference]: Finished difference Result 209 states and 509 transitions. [2022-11-18 20:07:09,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:07:09,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 20:07:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:09,628 INFO L225 Difference]: With dead ends: 209 [2022-11-18 20:07:09,628 INFO L226 Difference]: Without dead ends: 140 [2022-11-18 20:07:09,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:07:09,629 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:09,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:07:09,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-18 20:07:09,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2022-11-18 20:07:09,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 130 states have (on average 2.476923076923077) internal successors, (322), 133 states have internal predecessors, (322), 0 states have call successors, (0), 0 states 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 20:07:09,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 322 transitions. [2022-11-18 20:07:09,634 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 322 transitions. Word has length 13 [2022-11-18 20:07:09,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:09,634 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 322 transitions. [2022-11-18 20:07:09,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:07:09,635 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 322 transitions. [2022-11-18 20:07:09,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:07:09,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:09,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:09,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:09,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:09,849 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:07:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2028533270, now seen corresponding path program 1 times [2022-11-18 20:07:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:09,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961316266] [2022-11-18 20:07:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:09,850 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 20:07:09,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:09,852 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:09,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:10,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:07:10,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:10,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 20:07:10,196 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 20:07:10,267 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:07:10,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:07:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:07:10,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:10,610 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 166 treesize of output 162 [2022-11-18 20:07:10,819 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:07:10,819 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 256 treesize of output 164 [2022-11-18 20:07:10,830 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 92 treesize of output 88 [2022-11-18 20:07:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:07:16,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:16,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961316266] [2022-11-18 20:07:16,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961316266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:16,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:07:16,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 20:07:16,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033608415] [2022-11-18 20:07:16,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:16,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:07:16,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:07:16,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:07:16,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:07:16,514 INFO L87 Difference]: Start difference. First operand 134 states and 322 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:18,059 INFO L93 Difference]: Finished difference Result 254 states and 676 transitions. [2022-11-18 20:07:18,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:07:18,059 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:07:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:18,060 INFO L225 Difference]: With dead ends: 254 [2022-11-18 20:07:18,060 INFO L226 Difference]: Without dead ends: 254 [2022-11-18 20:07:18,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:07:18,061 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 157 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:18,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 3 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 219 Invalid, 0 Unknown, 163 Unchecked, 1.1s Time] [2022-11-18 20:07:18,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-18 20:07:18,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 172. [2022-11-18 20:07:18,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 168 states have (on average 2.5654761904761907) internal successors, (431), 171 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 20:07:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 431 transitions. [2022-11-18 20:07:18,068 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 431 transitions. Word has length 18 [2022-11-18 20:07:18,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:18,068 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 431 transitions. [2022-11-18 20:07:18,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 431 transitions. [2022-11-18 20:07:18,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:07:18,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:18,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:18,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:18,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:18,282 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:07:18,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:18,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1902070094, now seen corresponding path program 2 times [2022-11-18 20:07:18,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:18,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022582111] [2022-11-18 20:07:18,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:07:18,283 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 20:07:18,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:18,284 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:18,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:18,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:07:18,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:18,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:07:18,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:07:18,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:18,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:18,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022582111] [2022-11-18 20:07:18,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022582111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:18,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:18,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:07:18,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309895677] [2022-11-18 20:07:18,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:18,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:07:18,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:07:18,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:07:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:07:18,453 INFO L87 Difference]: Start difference. First operand 172 states and 431 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 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 20:07:18,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:18,573 INFO L93 Difference]: Finished difference Result 169 states and 425 transitions. [2022-11-18 20:07:18,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:07:18,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 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 18 [2022-11-18 20:07:18,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:18,574 INFO L225 Difference]: With dead ends: 169 [2022-11-18 20:07:18,574 INFO L226 Difference]: Without dead ends: 169 [2022-11-18 20:07:18,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 20:07:18,575 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:18,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:07:18,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-18 20:07:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-18 20:07:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 166 states have (on average 2.5602409638554215) internal successors, (425), 168 states have internal predecessors, (425), 0 states have call successors, (0), 0 states 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 20:07:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 425 transitions. [2022-11-18 20:07:18,579 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 425 transitions. Word has length 18 [2022-11-18 20:07:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:18,579 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 425 transitions. [2022-11-18 20:07:18,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 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 20:07:18,580 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 425 transitions. [2022-11-18 20:07:18,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:07:18,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:18,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:18,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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)] Ended with exit code 0 [2022-11-18 20:07:18,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:18,787 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:07:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:18,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1902070095, now seen corresponding path program 1 times [2022-11-18 20:07:18,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:18,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564066016] [2022-11-18 20:07:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:18,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:07:18,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:18,788 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:18,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:18,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:07:18,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:19,038 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 7 treesize of output 5 [2022-11-18 20:07:19,061 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 20:07:19,128 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:07:19,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:07:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:07:19,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:19,529 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 166 treesize of output 162 [2022-11-18 20:07:19,792 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:07:19,793 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 256 treesize of output 164 [2022-11-18 20:07:19,806 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 92 treesize of output 88 [2022-11-18 20:07:24,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:07:24,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:24,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564066016] [2022-11-18 20:07:24,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564066016] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:24,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:07:24,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 20:07:24,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075450442] [2022-11-18 20:07:24,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:24,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:07:24,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:07:24,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:07:24,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:07:24,769 INFO L87 Difference]: Start difference. First operand 169 states and 425 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:26,300 INFO L93 Difference]: Finished difference Result 333 states and 895 transitions. [2022-11-18 20:07:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:07:26,300 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:07:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:26,307 INFO L225 Difference]: With dead ends: 333 [2022-11-18 20:07:26,307 INFO L226 Difference]: Without dead ends: 333 [2022-11-18 20:07:26,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:07:26,310 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 194 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:26,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 3 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 176 Invalid, 0 Unknown, 139 Unchecked, 1.0s Time] [2022-11-18 20:07:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-18 20:07:26,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 173. [2022-11-18 20:07:26,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 170 states have (on average 2.5647058823529414) internal successors, (436), 172 states have internal predecessors, (436), 0 states have call successors, (0), 0 states 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 20:07:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 436 transitions. [2022-11-18 20:07:26,319 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 436 transitions. Word has length 18 [2022-11-18 20:07:26,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:26,319 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 436 transitions. [2022-11-18 20:07:26,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 436 transitions. [2022-11-18 20:07:26,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:07:26,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:26,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:26,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:26,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:26,538 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:07:26,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:26,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1663359905, now seen corresponding path program 2 times [2022-11-18 20:07:26,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:26,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191101631] [2022-11-18 20:07:26,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:07:26,540 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 20:07:26,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:26,541 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:26,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:26,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:07:26,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:26,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:07:26,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:07:26,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:26,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:26,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191101631] [2022-11-18 20:07:26,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191101631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:26,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:26,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:07:26,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429752277] [2022-11-18 20:07:26,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:26,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:07:26,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:07:26,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:07:26,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:07:26,813 INFO L87 Difference]: Start difference. First operand 173 states and 436 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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 20:07:26,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:26,947 INFO L93 Difference]: Finished difference Result 170 states and 430 transitions. [2022-11-18 20:07:26,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:07:26,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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 18 [2022-11-18 20:07:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:26,948 INFO L225 Difference]: With dead ends: 170 [2022-11-18 20:07:26,949 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 20:07:26,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 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 20:07:26,950 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3 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 20:07:26,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:07:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 20:07:26,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-11-18 20:07:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 168 states have (on average 2.5595238095238093) internal successors, (430), 169 states have internal predecessors, (430), 0 states have call successors, (0), 0 states 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 20:07:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 430 transitions. [2022-11-18 20:07:26,955 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 430 transitions. Word has length 18 [2022-11-18 20:07:26,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:26,956 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 430 transitions. [2022-11-18 20:07:26,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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 20:07:26,956 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 430 transitions. [2022-11-18 20:07:26,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:07:26,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:26,958 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1] [2022-11-18 20:07:26,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:27,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:27,172 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:07:27,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:27,172 INFO L85 PathProgramCache]: Analyzing trace with hash -531174716, now seen corresponding path program 4 times [2022-11-18 20:07:27,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:27,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498239195] [2022-11-18 20:07:27,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:07:27,172 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 20:07:27,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:27,173 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:27,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:07:27,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:07:27,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:27,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 20:07:27,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:27,603 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 20:07:27,603 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 20:07:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:29,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:44,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:44,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498239195] [2022-11-18 20:07:44,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498239195] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:44,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:07:44,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2022-11-18 20:07:44,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868630449] [2022-11-18 20:07:44,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:44,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 20:07:44,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:07:44,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 20:07:44,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:07:44,674 INFO L87 Difference]: Start difference. First operand 170 states and 430 transitions. Second operand has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 20:08:20,259 WARN L233 SmtUtils]: Spent 21.67s on a formula simplification that was a NOOP. DAG size: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:08:40,670 WARN L233 SmtUtils]: Spent 18.10s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:08:57,731 WARN L233 SmtUtils]: Spent 14.70s on a formula simplification that was a NOOP. DAG size: 232 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:09:13,018 WARN L233 SmtUtils]: Spent 12.95s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:09:25,244 WARN L233 SmtUtils]: Spent 9.80s on a formula simplification that was a NOOP. DAG size: 211 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:09:38,191 WARN L233 SmtUtils]: Spent 10.54s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:09:49,530 WARN L233 SmtUtils]: Spent 8.87s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:09:59,806 WARN L233 SmtUtils]: Spent 7.86s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:10:15,526 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:11:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:06,964 INFO L93 Difference]: Finished difference Result 6574 states and 17330 transitions. [2022-11-18 20:11:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:11:06,966 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 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 24 [2022-11-18 20:11:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:06,985 INFO L225 Difference]: With dead ends: 6574 [2022-11-18 20:11:06,985 INFO L226 Difference]: Without dead ends: 6574 [2022-11-18 20:11:06,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 173.8s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-11-18 20:11:06,987 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 11902 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 10632 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11902 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 10678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 10632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:06,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11902 Valid, 1584 Invalid, 10678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 10632 Invalid, 0 Unknown, 0 Unchecked, 43.0s Time] [2022-11-18 20:11:06,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6574 states. [2022-11-18 20:11:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6574 to 194. [2022-11-18 20:11:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 192 states have (on average 2.4895833333333335) internal successors, (478), 193 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 20:11:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 478 transitions. [2022-11-18 20:11:07,044 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 478 transitions. Word has length 24 [2022-11-18 20:11:07,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:07,044 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 478 transitions. [2022-11-18 20:11:07,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 20:11:07,045 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 478 transitions. [2022-11-18 20:11:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:11:07,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:07,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:07,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:07,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:11:07,263 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:11:07,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:07,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1604046965, now seen corresponding path program 1 times [2022-11-18 20:11:07,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:11:07,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462845540] [2022-11-18 20:11:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:07,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:11:07,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:11:07,265 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:11:07,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (35)] Waiting until timeout for monitored process [2022-11-18 20:11:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:07,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:11:07,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:11:07,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:11:07,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:11:07,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462845540] [2022-11-18 20:11:07,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462845540] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:07,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:11:07,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-11-18 20:11:07,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340492827] [2022-11-18 20:11:07,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:07,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:11:07,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:11:07,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:11:07,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:11:07,532 INFO L87 Difference]: Start difference. First operand 194 states and 478 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 20:11:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:07,877 INFO L93 Difference]: Finished difference Result 191 states and 455 transitions. [2022-11-18 20:11:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:11:07,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 24 [2022-11-18 20:11:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:07,878 INFO L225 Difference]: With dead ends: 191 [2022-11-18 20:11:07,878 INFO L226 Difference]: Without dead ends: 191 [2022-11-18 20:11:07,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:11:07,879 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:07,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:11:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-18 20:11:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 179. [2022-11-18 20:11:07,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 177 states have (on average 2.406779661016949) internal successors, (426), 178 states have internal predecessors, (426), 0 states have call successors, (0), 0 states 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 20:11:07,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 426 transitions. [2022-11-18 20:11:07,884 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 426 transitions. Word has length 24 [2022-11-18 20:11:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:07,884 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 426 transitions. [2022-11-18 20:11:07,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 20:11:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 426 transitions. [2022-11-18 20:11:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:11:07,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:07,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:07,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (35)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:08,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:11:08,091 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:11:08,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:08,091 INFO L85 PathProgramCache]: Analyzing trace with hash -616953453, now seen corresponding path program 2 times [2022-11-18 20:11:08,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:11:08,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879638090] [2022-11-18 20:11:08,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:11:08,092 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 20:11:08,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:11:08,093 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:11:08,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (36)] Waiting until timeout for monitored process [2022-11-18 20:11:08,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:11:08,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:08,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:11:08,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:08,347 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 18 treesize of output 16 [2022-11-18 20:11:08,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:11:08,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:11:08,699 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 51 treesize of output 47 [2022-11-18 20:11:08,838 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:11:08,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:11:08,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:11:08,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:09,327 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_1197 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1197) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0))) (forall ((v_ArrVal_1197 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1197) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0) (_ bv1 32)))))) is different from false [2022-11-18 20:11:09,357 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 166 treesize of output 162 [2022-11-18 20:11:09,669 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:11:09,669 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 352 treesize of output 260 [2022-11-18 20:11:09,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 92 [2022-11-18 20:11:09,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 65 [2022-11-18 20:11:09,724 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 92 treesize of output 88 [2022-11-18 20:11:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:11:18,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:11:18,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879638090] [2022-11-18 20:11:18,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879638090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:18,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:11:18,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-18 20:11:18,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76616632] [2022-11-18 20:11:18,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:18,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:11:18,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:11:18,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:11:18,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2022-11-18 20:11:18,381 INFO L87 Difference]: Start difference. First operand 179 states and 426 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 20:11:20,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:20,335 INFO L93 Difference]: Finished difference Result 300 states and 739 transitions. [2022-11-18 20:11:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:11:20,336 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 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 24 [2022-11-18 20:11:20,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:20,337 INFO L225 Difference]: With dead ends: 300 [2022-11-18 20:11:20,337 INFO L226 Difference]: Without dead ends: 300 [2022-11-18 20:11:20,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=126, Invalid=429, Unknown=1, NotChecked=44, Total=600 [2022-11-18 20:11:20,337 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 59 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:20,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 20 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 310 Invalid, 0 Unknown, 216 Unchecked, 1.1s Time] [2022-11-18 20:11:20,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-18 20:11:20,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 193. [2022-11-18 20:11:20,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 191 states have (on average 2.4554973821989527) internal successors, (469), 192 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 20:11:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 469 transitions. [2022-11-18 20:11:20,343 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 469 transitions. Word has length 24 [2022-11-18 20:11:20,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:20,343 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 469 transitions. [2022-11-18 20:11:20,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 20:11:20,343 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 469 transitions. [2022-11-18 20:11:20,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:11:20,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:20,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:20,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (36)] Ended with exit code 0 [2022-11-18 20:11:20,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:11:20,545 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:11:20,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:20,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2025813299, now seen corresponding path program 3 times [2022-11-18 20:11:20,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:11:20,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275288315] [2022-11-18 20:11:20,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:11:20,546 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 20:11:20,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:11:20,547 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:11:20,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (37)] Waiting until timeout for monitored process [2022-11-18 20:11:20,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:11:20,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:20,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:11:20,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:20,838 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 84 treesize of output 82 [2022-11-18 20:11:20,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:11:21,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:11:21,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:11:21,194 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 51 treesize of output 47 [2022-11-18 20:11:21,329 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:11:21,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:11:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:11:21,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:21,789 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_1236 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1236) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0) (_ bv1 32))) (forall ((v_ArrVal_1236 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1236) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0)))))) is different from false [2022-11-18 20:11:21,834 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 166 treesize of output 162 [2022-11-18 20:11:21,839 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 162 treesize of output 158 [2022-11-18 20:11:23,825 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:11:23,826 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 282 treesize of output 260 [2022-11-18 20:11:23,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 101 [2022-11-18 20:11:23,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:23,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:23,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:23,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:23,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:23,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:23,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:23,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:23,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:23,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:23,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:23,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:23,982 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:11:23,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 121 treesize of output 115 [2022-11-18 20:11:31,330 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:11:31,331 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 282 treesize of output 260 [2022-11-18 20:11:31,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 101 [2022-11-18 20:11:31,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:31,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:31,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:31,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:31,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:31,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:31,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:31,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:31,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:31,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:31,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:31,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:31,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:11:31,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 121 treesize of output 115 [2022-11-18 20:11:54,426 WARN L233 SmtUtils]: Spent 8.25s on a formula simplification. DAG size of input: 761 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:11:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:11:54,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:11:54,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275288315] [2022-11-18 20:11:54,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275288315] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:54,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:11:54,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2022-11-18 20:11:54,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900491696] [2022-11-18 20:11:54,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:54,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:11:54,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:11:54,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:11:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=255, Unknown=2, NotChecked=32, Total=342 [2022-11-18 20:11:54,807 INFO L87 Difference]: Start difference. First operand 193 states and 469 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:11:56,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:56,665 INFO L93 Difference]: Finished difference Result 260 states and 650 transitions. [2022-11-18 20:11:56,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:11:56,666 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 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 24 [2022-11-18 20:11:56,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:56,667 INFO L225 Difference]: With dead ends: 260 [2022-11-18 20:11:56,667 INFO L226 Difference]: Without dead ends: 260 [2022-11-18 20:11:56,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=134, Invalid=468, Unknown=2, NotChecked=46, Total=650 [2022-11-18 20:11:56,668 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 70 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:56,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 26 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 216 Invalid, 0 Unknown, 214 Unchecked, 0.8s Time] [2022-11-18 20:11:56,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-18 20:11:56,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 201. [2022-11-18 20:11:56,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 199 states have (on average 2.472361809045226) internal successors, (492), 200 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 20:11:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 492 transitions. [2022-11-18 20:11:56,672 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 492 transitions. Word has length 24 [2022-11-18 20:11:56,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:56,672 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 492 transitions. [2022-11-18 20:11:56,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:11:56,672 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 492 transitions. [2022-11-18 20:11:56,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:11:56,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:56,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:56,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (37)] Ended with exit code 0 [2022-11-18 20:11:56,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:11:56,873 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:11:56,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:56,874 INFO L85 PathProgramCache]: Analyzing trace with hash -56073165, now seen corresponding path program 4 times [2022-11-18 20:11:56,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:11:56,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514880119] [2022-11-18 20:11:56,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:11:56,875 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 20:11:56,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:11:56,875 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:11:56,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (38)] Waiting until timeout for monitored process [2022-11-18 20:11:57,088 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:11:57,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:57,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:11:57,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:57,109 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 18 treesize of output 16 [2022-11-18 20:11:57,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:11:57,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:11:57,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:11:57,546 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 51 treesize of output 47 [2022-11-18 20:11:57,709 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:11:57,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:11:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:11:57,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:58,242 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_1280 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1280) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0) (_ bv1 32))) (forall ((v_ArrVal_1280 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1280) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0)))))) is different from false [2022-11-18 20:11:58,272 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 166 treesize of output 162 [2022-11-18 20:11:58,276 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 162 treesize of output 158 [2022-11-18 20:12:00,026 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:12:00,027 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 482 treesize of output 425 [2022-11-18 20:12:00,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 320 treesize of output 212 [2022-11-18 20:12:00,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:00,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:00,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:00,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:00,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:00,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:00,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:00,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:00,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:00,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:00,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:00,095 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:00,188 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:12:00,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 269 treesize of output 236 [2022-11-18 20:12:20,519 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:12:20,519 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 482 treesize of output 425 [2022-11-18 20:12:20,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 320 treesize of output 212 [2022-11-18 20:12:20,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:20,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:20,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:20,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:20,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:20,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:20,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:20,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:20,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:20,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:20,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:20,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:12:20,660 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:12:20,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 269 treesize of output 236 [2022-11-18 20:12:42,136 WARN L233 SmtUtils]: Spent 12.23s on a formula simplification. DAG size of input: 820 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:12:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:12:42,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:12:42,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514880119] [2022-11-18 20:12:42,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514880119] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:12:42,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:12:42,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-18 20:12:42,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355230012] [2022-11-18 20:12:42,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:12:42,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:12:42,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:12:42,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:12:42,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=285, Unknown=2, NotChecked=34, Total=380 [2022-11-18 20:12:42,569 INFO L87 Difference]: Start difference. First operand 201 states and 492 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:12:44,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:44,067 INFO L93 Difference]: Finished difference Result 323 states and 814 transitions. [2022-11-18 20:12:44,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:12:44,068 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 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 24 [2022-11-18 20:12:44,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:44,069 INFO L225 Difference]: With dead ends: 323 [2022-11-18 20:12:44,069 INFO L226 Difference]: Without dead ends: 323 [2022-11-18 20:12:44,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=96, Invalid=368, Unknown=2, NotChecked=40, Total=506 [2022-11-18 20:12:44,069 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 122 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:44,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 36 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 192 Invalid, 0 Unknown, 155 Unchecked, 0.9s Time] [2022-11-18 20:12:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-18 20:12:44,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 230. [2022-11-18 20:12:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 228 states have (on average 2.482456140350877) internal successors, (566), 229 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 566 transitions. [2022-11-18 20:12:44,076 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 566 transitions. Word has length 24 [2022-11-18 20:12:44,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:44,077 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 566 transitions. [2022-11-18 20:12:44,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:12:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 566 transitions. [2022-11-18 20:12:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:12:44,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:44,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:44,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (38)] Ended with exit code 0 [2022-11-18 20:12:44,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:12:44,292 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:12:44,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:44,292 INFO L85 PathProgramCache]: Analyzing trace with hash 335378891, now seen corresponding path program 5 times [2022-11-18 20:12:44,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:12:44,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532307166] [2022-11-18 20:12:44,293 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:12:44,293 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 20:12:44,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:12:44,294 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:12:44,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (39)] Waiting until timeout for monitored process [2022-11-18 20:12:44,584 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:12:44,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:12:44,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:12:44,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:44,615 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 510 treesize of output 494 [2022-11-18 20:12:45,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:12:45,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:12:45,270 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 51 treesize of output 47 [2022-11-18 20:12:45,374 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:12:45,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 19 [2022-11-18 20:12:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:45,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:12:45,867 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_1318 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1318) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0))) (forall ((v_ArrVal_1318 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1318) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0) (_ bv1 32)))))) is different from false [2022-11-18 20:12:45,904 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 166 treesize of output 162 [2022-11-18 20:12:46,252 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:12:46,253 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 352 treesize of output 260 [2022-11-18 20:12:46,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 92 [2022-11-18 20:12:46,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 65 [2022-11-18 20:12:46,312 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 92 treesize of output 88 [2022-11-18 20:13:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:00,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:13:00,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532307166] [2022-11-18 20:13:00,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532307166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:00,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:13:00,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-18 20:13:00,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822497365] [2022-11-18 20:13:00,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:00,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:13:00,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:13:00,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:13:00,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=288, Unknown=1, NotChecked=34, Total=380 [2022-11-18 20:13:00,662 INFO L87 Difference]: Start difference. First operand 230 states and 566 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:13:05,565 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (= c_~v_assert~0 (_ bv1 8)) (forall ((v_ArrVal_1318 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1318) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0))) (forall ((v_ArrVal_1318 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1318) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0) (_ bv1 32)))))) is different from false [2022-11-18 20:13:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:06,173 INFO L93 Difference]: Finished difference Result 476 states and 1201 transitions. [2022-11-18 20:13:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:13:06,175 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 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 24 [2022-11-18 20:13:06,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:06,176 INFO L225 Difference]: With dead ends: 476 [2022-11-18 20:13:06,176 INFO L226 Difference]: Without dead ends: 476 [2022-11-18 20:13:06,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=167, Invalid=709, Unknown=2, NotChecked=114, Total=992 [2022-11-18 20:13:06,177 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 114 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:06,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 31 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 217 Invalid, 0 Unknown, 307 Unchecked, 0.8s Time] [2022-11-18 20:13:06,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-11-18 20:13:06,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 286. [2022-11-18 20:13:06,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 284 states have (on average 2.507042253521127) internal successors, (712), 285 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 20:13:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 712 transitions. [2022-11-18 20:13:06,184 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 712 transitions. Word has length 24 [2022-11-18 20:13:06,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:06,184 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 712 transitions. [2022-11-18 20:13:06,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:13:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 712 transitions. [2022-11-18 20:13:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:13:06,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:06,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:06,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (39)] Ended with exit code 0 [2022-11-18 20:13:06,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:13:06,394 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:13:06,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:06,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1184890649, now seen corresponding path program 6 times [2022-11-18 20:13:06,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:13:06,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702773725] [2022-11-18 20:13:06,394 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:13:06,395 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 20:13:06,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:13:06,402 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:13:06,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (40)] Waiting until timeout for monitored process [2022-11-18 20:13:06,647 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 20:13:06,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:13:06,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:13:06,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:06,675 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 18 treesize of output 16 [2022-11-18 20:13:06,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:13:06,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:13:07,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:13:07,139 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 51 treesize of output 47 [2022-11-18 20:13:07,253 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:13:07,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:13:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:13:07,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:07,817 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_1360 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1360) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0))) (forall ((v_ArrVal_1360 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1360) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0) (_ bv1 32)))))) is different from false [2022-11-18 20:13:07,863 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 166 treesize of output 162 [2022-11-18 20:13:07,869 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 162 treesize of output 158 [2022-11-18 20:13:10,015 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:13:10,016 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 482 treesize of output 425 [2022-11-18 20:13:10,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:10,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:10,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:10,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:10,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:10,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:10,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:10,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:10,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:10,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:10,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:10,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:10,181 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:13:10,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 377 treesize of output 344 [2022-11-18 20:13:10,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 158 [2022-11-18 20:13:15,866 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:13:15,867 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 482 treesize of output 425 [2022-11-18 20:13:15,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:15,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:15,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:15,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:15,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:15,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:15,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:15,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:15,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:15,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:15,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:15,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:16,003 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:13:16,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 377 treesize of output 344 [2022-11-18 20:13:16,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 158 [2022-11-18 20:13:35,883 WARN L233 SmtUtils]: Spent 11.27s on a formula simplification. DAG size of input: 559 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:13:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:13:36,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:13:36,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702773725] [2022-11-18 20:13:36,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702773725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:36,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:13:36,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-18 20:13:36,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760620679] [2022-11-18 20:13:36,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:36,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:13:36,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:13:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:13:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=285, Unknown=2, NotChecked=34, Total=380 [2022-11-18 20:13:36,310 INFO L87 Difference]: Start difference. First operand 286 states and 712 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 20:13:39,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:39,286 INFO L93 Difference]: Finished difference Result 483 states and 1202 transitions. [2022-11-18 20:13:39,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:13:39,288 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 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 24 [2022-11-18 20:13:39,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:39,289 INFO L225 Difference]: With dead ends: 483 [2022-11-18 20:13:39,289 INFO L226 Difference]: Without dead ends: 483 [2022-11-18 20:13:39,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=167, Invalid=591, Unknown=2, NotChecked=52, Total=812 [2022-11-18 20:13:39,290 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 109 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:39,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 17 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 327 Invalid, 0 Unknown, 215 Unchecked, 1.5s Time] [2022-11-18 20:13:39,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-18 20:13:39,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 295. [2022-11-18 20:13:39,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 293 states have (on average 2.52901023890785) internal successors, (741), 294 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 20:13:39,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 741 transitions. [2022-11-18 20:13:39,299 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 741 transitions. Word has length 24 [2022-11-18 20:13:39,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:39,299 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 741 transitions. [2022-11-18 20:13:39,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 20:13:39,299 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 741 transitions. [2022-11-18 20:13:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:13:39,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:39,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:39,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (40)] Ended with exit code 0 [2022-11-18 20:13:39,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:13:39,500 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:13:39,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:39,501 INFO L85 PathProgramCache]: Analyzing trace with hash -677988217, now seen corresponding path program 7 times [2022-11-18 20:13:39,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:13:39,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210281220] [2022-11-18 20:13:39,501 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:13:39,502 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 20:13:39,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:13:39,503 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:13:39,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (41)] Waiting until timeout for monitored process [2022-11-18 20:13:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:39,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:13:39,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:39,808 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 130 treesize of output 126 [2022-11-18 20:13:40,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:13:40,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:13:40,202 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 51 treesize of output 47 [2022-11-18 20:13:40,360 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:13:40,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:13:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:13:40,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:40,880 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_1398 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd c_~sum~0 (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1398) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4)))) (_ bv1 32))) (forall ((v_ArrVal_1398 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd c_~sum~0 (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1398) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))))))))) is different from false [2022-11-18 20:13:40,949 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 166 treesize of output 162 [2022-11-18 20:13:41,288 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:13:41,288 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 352 treesize of output 260 [2022-11-18 20:13:41,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 92 [2022-11-18 20:13:41,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 65 [2022-11-18 20:13:41,336 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 92 treesize of output 88 [2022-11-18 20:13:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:13:50,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:13:50,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210281220] [2022-11-18 20:13:50,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210281220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:50,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:13:50,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-18 20:13:50,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210197491] [2022-11-18 20:13:50,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:50,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:13:50,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:13:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:13:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2022-11-18 20:13:50,693 INFO L87 Difference]: Start difference. First operand 295 states and 741 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:13:52,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:52,047 INFO L93 Difference]: Finished difference Result 481 states and 1246 transitions. [2022-11-18 20:13:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:13:52,048 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 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 24 [2022-11-18 20:13:52,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:52,049 INFO L225 Difference]: With dead ends: 481 [2022-11-18 20:13:52,049 INFO L226 Difference]: Without dead ends: 461 [2022-11-18 20:13:52,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=112, Invalid=443, Unknown=1, NotChecked=44, Total=600 [2022-11-18 20:13:52,050 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 117 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:52,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 45 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 153 Invalid, 0 Unknown, 253 Unchecked, 0.7s Time] [2022-11-18 20:13:52,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-18 20:13:52,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 272. [2022-11-18 20:13:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 270 states have (on average 2.5185185185185186) internal successors, (680), 271 states have internal predecessors, (680), 0 states have call successors, (0), 0 states 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 20:13:52,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 680 transitions. [2022-11-18 20:13:52,056 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 680 transitions. Word has length 24 [2022-11-18 20:13:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:52,056 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 680 transitions. [2022-11-18 20:13:52,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:13:52,057 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 680 transitions. [2022-11-18 20:13:52,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:13:52,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:52,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:52,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (41)] Ended with exit code 0 [2022-11-18 20:13:52,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:13:52,263 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:13:52,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:52,263 INFO L85 PathProgramCache]: Analyzing trace with hash -117107929, now seen corresponding path program 8 times [2022-11-18 20:13:52,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:13:52,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489111350] [2022-11-18 20:13:52,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:13:52,263 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 20:13:52,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:13:52,264 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:13:52,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (42)] Waiting until timeout for monitored process [2022-11-18 20:13:52,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:13:52,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:13:52,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:13:52,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:52,550 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 120 treesize of output 116 [2022-11-18 20:13:52,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:13:52,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:13:52,914 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 51 treesize of output 47 [2022-11-18 20:13:53,074 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:13:53,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:13:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:13:53,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:53,585 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_1436 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1436) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0))) (forall ((v_ArrVal_1436 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1436) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0) (_ bv1 32)))))) is different from false [2022-11-18 20:13:53,648 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 166 treesize of output 162 [2022-11-18 20:13:53,956 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:13:53,956 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 352 treesize of output 260 [2022-11-18 20:13:53,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 92 [2022-11-18 20:13:53,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 65 [2022-11-18 20:13:54,008 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 92 treesize of output 88 [2022-11-18 20:14:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:14:01,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:14:01,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489111350] [2022-11-18 20:14:01,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489111350] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:01,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:14:01,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-18 20:14:01,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297699495] [2022-11-18 20:14:01,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:01,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:14:01,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:14:01,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:14:01,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2022-11-18 20:14:01,841 INFO L87 Difference]: Start difference. First operand 272 states and 680 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 20:14:04,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:04,018 INFO L93 Difference]: Finished difference Result 371 states and 908 transitions. [2022-11-18 20:14:04,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:14:04,020 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 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 24 [2022-11-18 20:14:04,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:04,021 INFO L225 Difference]: With dead ends: 371 [2022-11-18 20:14:04,021 INFO L226 Difference]: Without dead ends: 371 [2022-11-18 20:14:04,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=126, Invalid=429, Unknown=1, NotChecked=44, Total=600 [2022-11-18 20:14:04,022 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 89 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:04,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 20 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 251 Invalid, 0 Unknown, 175 Unchecked, 1.2s Time] [2022-11-18 20:14:04,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-11-18 20:14:04,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 280. [2022-11-18 20:14:04,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 278 states have (on average 2.5179856115107913) internal successors, (700), 279 states have internal predecessors, (700), 0 states have call successors, (0), 0 states 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 20:14:04,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 700 transitions. [2022-11-18 20:14:04,030 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 700 transitions. Word has length 24 [2022-11-18 20:14:04,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:04,030 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 700 transitions. [2022-11-18 20:14:04,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 20:14:04,031 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 700 transitions. [2022-11-18 20:14:04,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:14:04,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:04,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:04,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (42)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:04,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:14:04,246 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:14:04,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:04,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1525967775, now seen corresponding path program 9 times [2022-11-18 20:14:04,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:14:04,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135096847] [2022-11-18 20:14:04,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:14:04,247 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 20:14:04,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:14:04,248 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:14:04,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (43)] Waiting until timeout for monitored process [2022-11-18 20:14:04,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:14:04,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:14:04,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:14:04,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:04,551 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 152 treesize of output 144 [2022-11-18 20:14:04,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:14:04,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:14:04,928 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 51 treesize of output 47 [2022-11-18 20:14:05,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:14:05,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:14:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:14:05,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:05,568 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_1474 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1474) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0))) (forall ((v_ArrVal_1474 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1474) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0) (_ bv1 32)))))) is different from false [2022-11-18 20:14:05,627 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 166 treesize of output 162 [2022-11-18 20:14:05,926 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:14:05,927 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 352 treesize of output 260 [2022-11-18 20:14:05,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 92 [2022-11-18 20:14:05,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 65 [2022-11-18 20:14:05,983 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 92 treesize of output 88 [2022-11-18 20:14:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:14:15,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:14:15,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135096847] [2022-11-18 20:14:15,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135096847] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:15,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:14:15,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-18 20:14:15,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906653500] [2022-11-18 20:14:15,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:15,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:14:15,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:14:15,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:14:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2022-11-18 20:14:15,645 INFO L87 Difference]: Start difference. First operand 280 states and 700 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:14:17,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:17,854 INFO L93 Difference]: Finished difference Result 376 states and 959 transitions. [2022-11-18 20:14:17,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:14:17,856 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 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 24 [2022-11-18 20:14:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:17,856 INFO L225 Difference]: With dead ends: 376 [2022-11-18 20:14:17,856 INFO L226 Difference]: Without dead ends: 376 [2022-11-18 20:14:17,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=137, Invalid=466, Unknown=1, NotChecked=46, Total=650 [2022-11-18 20:14:17,857 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 102 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:17,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 25 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 222 Invalid, 0 Unknown, 204 Unchecked, 1.2s Time] [2022-11-18 20:14:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-18 20:14:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 284. [2022-11-18 20:14:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 2.528368794326241) internal successors, (713), 283 states have internal predecessors, (713), 0 states have call successors, (0), 0 states 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 20:14:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 713 transitions. [2022-11-18 20:14:17,865 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 713 transitions. Word has length 24 [2022-11-18 20:14:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:17,865 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 713 transitions. [2022-11-18 20:14:17,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:14:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 713 transitions. [2022-11-18 20:14:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:14:17,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:17,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:17,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (43)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:18,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:14:18,080 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:14:18,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:18,080 INFO L85 PathProgramCache]: Analyzing trace with hash 714151289, now seen corresponding path program 10 times [2022-11-18 20:14:18,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:14:18,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286113071] [2022-11-18 20:14:18,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:14:18,081 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 20:14:18,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:14:18,081 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:14:18,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (44)] Waiting until timeout for monitored process [2022-11-18 20:14:18,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:14:18,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:14:18,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:14:18,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:18,377 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 120 treesize of output 116 [2022-11-18 20:14:18,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:14:18,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:14:18,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:14:18,793 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 51 treesize of output 47 [2022-11-18 20:14:19,032 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:14:19,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:14:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:14:19,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:19,596 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_1513 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1513) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0))) (forall ((v_ArrVal_1513 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1513) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0) (_ bv1 32)))))) is different from false [2022-11-18 20:14:19,628 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 166 treesize of output 162 [2022-11-18 20:14:19,632 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 162 treesize of output 158 [2022-11-18 20:14:21,478 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:14:21,478 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 282 treesize of output 260 [2022-11-18 20:14:21,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 101 [2022-11-18 20:14:21,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:21,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:21,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:21,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:21,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:21,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:21,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:21,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:21,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:21,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:21,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:21,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:21,634 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:14:21,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 121 treesize of output 115 [2022-11-18 20:14:38,686 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:14:38,687 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 282 treesize of output 260 [2022-11-18 20:14:38,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 101 [2022-11-18 20:14:38,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:38,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:38,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:38,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:38,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:38,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:38,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:38,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:38,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:38,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:38,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:38,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:14:38,867 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:14:38,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 121 treesize of output 115 [2022-11-18 20:15:12,881 WARN L233 SmtUtils]: Spent 19.93s on a formula simplification. DAG size of input: 754 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:15:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:15:13,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:15:13,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286113071] [2022-11-18 20:15:13,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286113071] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:13,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:13,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2022-11-18 20:15:13,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128684667] [2022-11-18 20:15:13,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:13,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:15:13,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:15:13,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:15:13,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=255, Unknown=2, NotChecked=32, Total=342 [2022-11-18 20:15:13,314 INFO L87 Difference]: Start difference. First operand 284 states and 713 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:15:14,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:14,758 INFO L93 Difference]: Finished difference Result 510 states and 1332 transitions. [2022-11-18 20:15:14,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:15:14,763 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 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 24 [2022-11-18 20:15:14,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:14,765 INFO L225 Difference]: With dead ends: 510 [2022-11-18 20:15:14,765 INFO L226 Difference]: Without dead ends: 510 [2022-11-18 20:15:14,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=109, Invalid=445, Unknown=2, NotChecked=44, Total=600 [2022-11-18 20:15:14,766 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 99 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:14,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 42 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 241 Unchecked, 0.6s Time] [2022-11-18 20:15:14,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-11-18 20:15:14,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 331. [2022-11-18 20:15:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 329 states have (on average 2.5653495440729484) internal successors, (844), 330 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 20:15:14,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 844 transitions. [2022-11-18 20:15:14,774 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 844 transitions. Word has length 24 [2022-11-18 20:15:14,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:14,774 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 844 transitions. [2022-11-18 20:15:14,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:15:14,774 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 844 transitions. [2022-11-18 20:15:14,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:15:14,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:14,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:14,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (44)] Ended with exit code 0 [2022-11-18 20:15:14,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:15:14,976 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:15:14,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:14,977 INFO L85 PathProgramCache]: Analyzing trace with hash -185262483, now seen corresponding path program 11 times [2022-11-18 20:15:14,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:15:14,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531590332] [2022-11-18 20:15:14,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:15:14,977 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 20:15:14,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:15:14,978 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:15:14,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (45)] Waiting until timeout for monitored process [2022-11-18 20:15:15,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:15:15,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:15:15,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:15:15,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:15,298 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 18 treesize of output 16 [2022-11-18 20:15:15,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:15:15,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:15:15,639 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 51 treesize of output 47 [2022-11-18 20:15:15,781 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:15:15,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 19 [2022-11-18 20:15:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:15:15,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:16,516 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 166 treesize of output 162 [2022-11-18 20:15:16,808 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:15:16,809 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 352 treesize of output 260 [2022-11-18 20:15:16,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 92 [2022-11-18 20:15:16,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 65 [2022-11-18 20:15:16,865 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 92 treesize of output 88 [2022-11-18 20:15:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:15:27,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:15:27,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531590332] [2022-11-18 20:15:27,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531590332] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:27,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:27,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-18 20:15:27,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526307680] [2022-11-18 20:15:27,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:27,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:15:27,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:15:27,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:15:27,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=246, Unknown=10, NotChecked=0, Total=306 [2022-11-18 20:15:27,782 INFO L87 Difference]: Start difference. First operand 331 states and 844 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:15:30,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:15:31,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:31,459 INFO L93 Difference]: Finished difference Result 550 states and 1441 transitions. [2022-11-18 20:15:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:15:31,461 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 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 24 [2022-11-18 20:15:31,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:31,462 INFO L225 Difference]: With dead ends: 550 [2022-11-18 20:15:31,462 INFO L226 Difference]: Without dead ends: 550 [2022-11-18 20:15:31,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=163, Invalid=579, Unknown=14, NotChecked=0, Total=756 [2022-11-18 20:15:31,463 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 160 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 226 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:31,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 2 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 228 Invalid, 1 Unknown, 226 Unchecked, 2.9s Time] [2022-11-18 20:15:31,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-11-18 20:15:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 413. [2022-11-18 20:15:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 411 states have (on average 2.591240875912409) internal successors, (1065), 412 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states 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 20:15:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1065 transitions. [2022-11-18 20:15:31,473 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1065 transitions. Word has length 24 [2022-11-18 20:15:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:31,474 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 1065 transitions. [2022-11-18 20:15:31,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:15:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1065 transitions. [2022-11-18 20:15:31,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:15:31,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:31,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:31,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (45)] Ended with exit code 0 [2022-11-18 20:15:31,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:15:31,688 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:15:31,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:31,689 INFO L85 PathProgramCache]: Analyzing trace with hash 24695957, now seen corresponding path program 12 times [2022-11-18 20:15:31,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:15:31,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444517555] [2022-11-18 20:15:31,689 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:15:31,689 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 20:15:31,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:15:31,690 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:15:31,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (46)] Waiting until timeout for monitored process [2022-11-18 20:15:31,934 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 20:15:31,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:15:31,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:15:31,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:31,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 82 [2022-11-18 20:15:32,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:15:32,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:15:32,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:15:32,287 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 51 treesize of output 47 [2022-11-18 20:15:32,444 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:15:32,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:15:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:15:32,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:32,939 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_1593 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1593) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0) (_ bv1 32))) (forall ((v_ArrVal_1593 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1593) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0)))))) is different from false [2022-11-18 20:15:32,968 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 166 treesize of output 162 [2022-11-18 20:15:32,971 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 162 treesize of output 158 [2022-11-18 20:15:34,577 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:15:34,577 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 482 treesize of output 425 [2022-11-18 20:15:34,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 320 treesize of output 212 [2022-11-18 20:15:34,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:34,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:34,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:34,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:34,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:34,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:34,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:34,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:34,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:34,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:34,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:34,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:34,743 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:15:34,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 269 treesize of output 236 [2022-11-18 20:15:49,332 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:15:49,332 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 482 treesize of output 425 [2022-11-18 20:15:49,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 320 treesize of output 212 [2022-11-18 20:15:49,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:49,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:49,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:49,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:49,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:49,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:49,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:49,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:49,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:49,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:49,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:49,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:49,494 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:15:49,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 269 treesize of output 236 [2022-11-18 20:16:13,195 WARN L233 SmtUtils]: Spent 14.71s on a formula simplification. DAG size of input: 697 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:16:13,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:16:13,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:16:13,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444517555] [2022-11-18 20:16:13,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444517555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:16:13,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:16:13,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2022-11-18 20:16:13,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912301693] [2022-11-18 20:16:13,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:16:13,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:16:13,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:16:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:16:13,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=255, Unknown=2, NotChecked=32, Total=342 [2022-11-18 20:16:13,580 INFO L87 Difference]: Start difference. First operand 413 states and 1065 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 20:16:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:15,104 INFO L93 Difference]: Finished difference Result 667 states and 1755 transitions. [2022-11-18 20:16:15,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:16:15,107 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 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 24 [2022-11-18 20:16:15,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:15,108 INFO L225 Difference]: With dead ends: 667 [2022-11-18 20:16:15,108 INFO L226 Difference]: Without dead ends: 667 [2022-11-18 20:16:15,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=95, Invalid=369, Unknown=2, NotChecked=40, Total=506 [2022-11-18 20:16:15,109 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 75 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:15,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 36 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 170 Invalid, 0 Unknown, 147 Unchecked, 0.8s Time] [2022-11-18 20:16:15,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-18 20:16:15,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 431. [2022-11-18 20:16:15,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 429 states have (on average 2.6270396270396272) internal successors, (1127), 430 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states 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 20:16:15,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1127 transitions. [2022-11-18 20:16:15,121 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1127 transitions. Word has length 24 [2022-11-18 20:16:15,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:15,121 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 1127 transitions. [2022-11-18 20:16:15,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 20:16:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1127 transitions. [2022-11-18 20:16:15,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:16:15,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:15,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:15,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (46)] Ended with exit code 0 [2022-11-18 20:16:15,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:16:15,323 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:16:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:15,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1784035205, now seen corresponding path program 13 times [2022-11-18 20:16:15,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:16:15,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930346858] [2022-11-18 20:16:15,324 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:16:15,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:16:15,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:16:15,325 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:16:15,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (47)] Waiting until timeout for monitored process [2022-11-18 20:16:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:15,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:16:15,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:15,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 323 treesize of output 315 [2022-11-18 20:16:15,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:16:15,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:16:15,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:16:15,976 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 51 treesize of output 47 [2022-11-18 20:16:16,217 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:16:16,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:16:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:16:16,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:16,805 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_1632 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1632) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0) (_ bv1 32))) (forall ((v_ArrVal_1632 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1632) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0)))))) is different from false [2022-11-18 20:16:16,837 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 166 treesize of output 162 [2022-11-18 20:16:16,841 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 162 treesize of output 158 [2022-11-18 20:16:18,825 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:16:18,825 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 482 treesize of output 425 [2022-11-18 20:16:18,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 320 treesize of output 212 [2022-11-18 20:16:18,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:18,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:18,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:18,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:18,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:18,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:18,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:18,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:18,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:18,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:18,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:18,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:19,014 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:16:19,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 269 treesize of output 236 [2022-11-18 20:16:40,839 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:16:40,840 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 482 treesize of output 425 [2022-11-18 20:16:40,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:40,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:40,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:40,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:40,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:40,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:40,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:40,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:40,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:40,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:40,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:40,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:16:41,009 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:16:41,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 377 treesize of output 344 [2022-11-18 20:16:41,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 158 [2022-11-18 20:17:14,025 WARN L233 SmtUtils]: Spent 12.53s on a formula simplification. DAG size of input: 863 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:17:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:17:14,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:17:14,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930346858] [2022-11-18 20:17:14,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930346858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:17:14,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:17:14,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2022-11-18 20:17:14,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517258333] [2022-11-18 20:17:14,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:17:14,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:17:14,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:17:14,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:17:14,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=255, Unknown=2, NotChecked=32, Total=342 [2022-11-18 20:17:14,455 INFO L87 Difference]: Start difference. First operand 431 states and 1127 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:17:16,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:16,893 INFO L93 Difference]: Finished difference Result 637 states and 1648 transitions. [2022-11-18 20:17:16,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:17:16,895 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 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 24 [2022-11-18 20:17:16,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:16,897 INFO L225 Difference]: With dead ends: 637 [2022-11-18 20:17:16,897 INFO L226 Difference]: Without dead ends: 637 [2022-11-18 20:17:16,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=134, Invalid=468, Unknown=2, NotChecked=46, Total=650 [2022-11-18 20:17:16,898 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 116 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:16,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 25 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 210 Invalid, 0 Unknown, 263 Unchecked, 1.2s Time] [2022-11-18 20:17:16,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-11-18 20:17:16,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 440. [2022-11-18 20:17:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 438 states have (on average 2.6232876712328768) internal successors, (1149), 439 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states 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 20:17:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1149 transitions. [2022-11-18 20:17:16,915 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1149 transitions. Word has length 24 [2022-11-18 20:17:16,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:16,915 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 1149 transitions. [2022-11-18 20:17:16,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:17:16,916 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1149 transitions. [2022-11-18 20:17:16,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:17:16,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:16,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:16,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (47)] Forceful destruction successful, exit code 0 [2022-11-18 20:17:17,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:17:17,131 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:17:17,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:17,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1550769643, now seen corresponding path program 14 times [2022-11-18 20:17:17,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:17:17,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741241766] [2022-11-18 20:17:17,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:17:17,131 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 20:17:17,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:17:17,132 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:17:17,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (48)] Waiting until timeout for monitored process [2022-11-18 20:17:17,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:17:17,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:17:17,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:17:17,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:17:17,403 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 18 treesize of output 16 [2022-11-18 20:17:17,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:17:17,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:17:17,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:17:17,853 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 51 treesize of output 47 [2022-11-18 20:17:18,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:17:18,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:17:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:17:18,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:17:18,996 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 166 treesize of output 162 [2022-11-18 20:17:19,000 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 162 treesize of output 158 [2022-11-18 20:17:20,990 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:17:20,991 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 482 treesize of output 425 [2022-11-18 20:17:21,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:21,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:21,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:21,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:21,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:21,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:21,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:21,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:21,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:21,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:21,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:21,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:21,198 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:17:21,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 218 treesize of output 185 [2022-11-18 20:17:21,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 158 [2022-11-18 20:17:26,437 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:17:26,437 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 482 treesize of output 425 [2022-11-18 20:17:26,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:26,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:26,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:26,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:26,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:26,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:26,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:26,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:26,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:26,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:26,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:26,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:17:26,661 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:17:26,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 218 treesize of output 185 [2022-11-18 20:17:26,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 158 [2022-11-18 20:17:46,129 WARN L233 SmtUtils]: Spent 10.56s on a formula simplification. DAG size of input: 518 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:17:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:17:46,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:17:46,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741241766] [2022-11-18 20:17:46,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741241766] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:17:46,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:17:46,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-18 20:17:46,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674337820] [2022-11-18 20:17:46,539 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:17:46,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:17:46,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:17:46,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:17:46,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=316, Unknown=4, NotChecked=0, Total=380 [2022-11-18 20:17:46,540 INFO L87 Difference]: Start difference. First operand 440 states and 1149 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:17:49,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:49,195 INFO L93 Difference]: Finished difference Result 646 states and 1743 transitions. [2022-11-18 20:17:49,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:17:49,197 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 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 24 [2022-11-18 20:17:49,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:49,198 INFO L225 Difference]: With dead ends: 646 [2022-11-18 20:17:49,198 INFO L226 Difference]: Without dead ends: 646 [2022-11-18 20:17:49,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=146, Invalid=552, Unknown=4, NotChecked=0, Total=702 [2022-11-18 20:17:49,199 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 102 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 234 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:49,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 11 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 340 Invalid, 0 Unknown, 234 Unchecked, 1.7s Time] [2022-11-18 20:17:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-11-18 20:17:49,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 452. [2022-11-18 20:17:49,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 450 states have (on average 2.6422222222222222) internal successors, (1189), 451 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states 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 20:17:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1189 transitions. [2022-11-18 20:17:49,213 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1189 transitions. Word has length 24 [2022-11-18 20:17:49,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:49,213 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 1189 transitions. [2022-11-18 20:17:49,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:17:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1189 transitions. [2022-11-18 20:17:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:17:49,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:49,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:49,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (48)] Forceful destruction successful, exit code 0 [2022-11-18 20:17:49,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:17:49,430 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:17:49,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:49,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1306192727, now seen corresponding path program 15 times [2022-11-18 20:17:49,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:17:49,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396780256] [2022-11-18 20:17:49,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:17:49,431 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 20:17:49,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:17:49,432 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:17:49,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (49)] Waiting until timeout for monitored process [2022-11-18 20:17:49,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:17:49,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:17:49,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:17:49,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:17:49,715 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 510 treesize of output 494 [2022-11-18 20:17:49,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:17:49,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:17:50,084 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 51 treesize of output 47 [2022-11-18 20:17:50,243 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:17:50,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:17:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:17:50,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:17:50,775 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_1712 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1712) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0) (_ bv1 32))) (forall ((v_ArrVal_1712 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1712) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0)))))) is different from false [2022-11-18 20:17:50,813 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 166 treesize of output 162 [2022-11-18 20:17:51,150 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:17:51,150 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 352 treesize of output 260 [2022-11-18 20:17:51,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 92 [2022-11-18 20:17:51,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 65 [2022-11-18 20:17:51,209 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 92 treesize of output 88 [2022-11-18 20:18:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:00,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:18:00,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396780256] [2022-11-18 20:18:00,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396780256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:00,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:18:00,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-18 20:18:00,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084191316] [2022-11-18 20:18:00,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:00,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:18:00,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:18:00,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:18:00,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2022-11-18 20:18:00,660 INFO L87 Difference]: Start difference. First operand 452 states and 1189 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:18:03,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:03,271 INFO L93 Difference]: Finished difference Result 578 states and 1522 transitions. [2022-11-18 20:18:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:18:03,273 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 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 24 [2022-11-18 20:18:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:03,274 INFO L225 Difference]: With dead ends: 578 [2022-11-18 20:18:03,274 INFO L226 Difference]: Without dead ends: 578 [2022-11-18 20:18:03,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=145, Invalid=508, Unknown=1, NotChecked=48, Total=702 [2022-11-18 20:18:03,275 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 74 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:03,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 32 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 272 Invalid, 0 Unknown, 132 Unchecked, 1.5s Time] [2022-11-18 20:18:03,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-11-18 20:18:03,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 466. [2022-11-18 20:18:03,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 2.6573275862068964) internal successors, (1233), 465 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states 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 20:18:03,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1233 transitions. [2022-11-18 20:18:03,296 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1233 transitions. Word has length 24 [2022-11-18 20:18:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:03,296 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 1233 transitions. [2022-11-18 20:18:03,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:18:03,297 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1233 transitions. [2022-11-18 20:18:03,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:18:03,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:03,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:03,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (49)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:03,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:18:03,511 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:18:03,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:03,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1758683203, now seen corresponding path program 16 times [2022-11-18 20:18:03,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:18:03,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602312948] [2022-11-18 20:18:03,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:18:03,512 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 20:18:03,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:18:03,513 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:18:03,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (50)] Waiting until timeout for monitored process [2022-11-18 20:18:03,754 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:18:03,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:03,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:18:03,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:03,774 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 18 treesize of output 16 [2022-11-18 20:18:03,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:18:04,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:18:04,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:18:04,212 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 51 treesize of output 47 [2022-11-18 20:18:04,395 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:18:04,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:18:04,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:04,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:04,972 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_1754 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1754) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0))) (forall ((v_ArrVal_1754 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1754) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0) (_ bv1 32)))))) is different from false [2022-11-18 20:18:05,001 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 166 treesize of output 162 [2022-11-18 20:18:05,005 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 162 treesize of output 158 [2022-11-18 20:18:07,064 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:18:07,064 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 482 treesize of output 425 [2022-11-18 20:18:07,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 320 treesize of output 212 [2022-11-18 20:18:07,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:07,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:07,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:07,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:07,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:07,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:07,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:07,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:07,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:07,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:07,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:07,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:07,260 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:18:07,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 269 treesize of output 236 [2022-11-18 20:18:12,559 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:18:12,559 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 482 treesize of output 425 [2022-11-18 20:18:12,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 320 treesize of output 212 [2022-11-18 20:18:12,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:12,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:12,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:12,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:12,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:12,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:12,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:12,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:12,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:12,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:12,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:12,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:12,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:18:12,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 269 treesize of output 236 [2022-11-18 20:18:30,490 WARN L233 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 466 DAG size of output: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:18:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:30,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:18:30,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602312948] [2022-11-18 20:18:30,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602312948] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:30,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:18:30,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-18 20:18:30,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499517923] [2022-11-18 20:18:30,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:30,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:18:30,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:18:30,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:18:30,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=285, Unknown=2, NotChecked=34, Total=380 [2022-11-18 20:18:30,907 INFO L87 Difference]: Start difference. First operand 466 states and 1233 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:18:33,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:34,000 INFO L93 Difference]: Finished difference Result 666 states and 1736 transitions. [2022-11-18 20:18:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:18:34,001 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 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 24 [2022-11-18 20:18:34,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:34,002 INFO L225 Difference]: With dead ends: 666 [2022-11-18 20:18:34,003 INFO L226 Difference]: Without dead ends: 666 [2022-11-18 20:18:34,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=167, Invalid=591, Unknown=2, NotChecked=52, Total=812 [2022-11-18 20:18:34,003 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 98 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:34,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 39 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 295 Invalid, 0 Unknown, 206 Unchecked, 1.4s Time] [2022-11-18 20:18:34,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-11-18 20:18:34,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 458. [2022-11-18 20:18:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 456 states have (on average 2.651315789473684) internal successors, (1209), 457 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states 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 20:18:34,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1209 transitions. [2022-11-18 20:18:34,012 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 1209 transitions. Word has length 24 [2022-11-18 20:18:34,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:34,012 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 1209 transitions. [2022-11-18 20:18:34,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:18:34,012 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1209 transitions. [2022-11-18 20:18:34,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:18:34,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:34,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:34,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (50)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:34,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:18:34,219 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:18:34,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:34,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1096690275, now seen corresponding path program 17 times [2022-11-18 20:18:34,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:18:34,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604911550] [2022-11-18 20:18:34,219 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:18:34,219 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 20:18:34,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:18:34,220 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:18:34,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (51)] Waiting until timeout for monitored process [2022-11-18 20:18:34,512 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:18:34,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:34,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:18:34,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:34,717 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 7 treesize of output 5 [2022-11-18 20:18:34,732 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 20:18:34,819 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:18:34,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 19 [2022-11-18 20:18:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:34,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:35,293 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 166 treesize of output 162 [2022-11-18 20:18:35,549 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:18:35,549 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 256 treesize of output 164 [2022-11-18 20:18:35,562 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 92 treesize of output 88 [2022-11-18 20:18:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:41,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:18:41,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604911550] [2022-11-18 20:18:41,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604911550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:41,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:18:41,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-18 20:18:41,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930104294] [2022-11-18 20:18:41,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:41,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:18:41,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:18:41,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:18:41,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:18:41,719 INFO L87 Difference]: Start difference. First operand 458 states and 1209 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:18:44,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:44,803 INFO L93 Difference]: Finished difference Result 952 states and 2595 transitions. [2022-11-18 20:18:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:18:44,805 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 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 24 [2022-11-18 20:18:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:44,807 INFO L225 Difference]: With dead ends: 952 [2022-11-18 20:18:44,807 INFO L226 Difference]: Without dead ends: 932 [2022-11-18 20:18:44,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:18:44,808 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 109 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:44,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 21 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 218 Unchecked, 0.8s Time] [2022-11-18 20:18:44,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-11-18 20:18:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 528. [2022-11-18 20:18:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 526 states have (on average 2.671102661596958) internal successors, (1405), 527 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states 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 20:18:44,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1405 transitions. [2022-11-18 20:18:44,823 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1405 transitions. Word has length 24 [2022-11-18 20:18:44,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:44,823 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 1405 transitions. [2022-11-18 20:18:44,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:18:44,824 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1405 transitions. [2022-11-18 20:18:44,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:18:44,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:44,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:44,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (51)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:45,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:18:45,039 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:18:45,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:45,040 INFO L85 PathProgramCache]: Analyzing trace with hash -886731835, now seen corresponding path program 18 times [2022-11-18 20:18:45,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:18:45,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676453662] [2022-11-18 20:18:45,040 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:18:45,040 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 20:18:45,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:18:45,042 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:18:45,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (52)] Waiting until timeout for monitored process [2022-11-18 20:18:45,316 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 20:18:45,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:45,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:18:45,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:45,484 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 7 treesize of output 5 [2022-11-18 20:18:45,508 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 20:18:45,611 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:18:45,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:18:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:45,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:46,065 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 166 treesize of output 162 [2022-11-18 20:18:46,302 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:18:46,303 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 256 treesize of output 164 [2022-11-18 20:18:46,315 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 92 treesize of output 88 [2022-11-18 20:18:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:51,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:18:51,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676453662] [2022-11-18 20:18:51,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676453662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:51,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:18:51,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 20:18:51,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683736549] [2022-11-18 20:18:51,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:51,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:18:51,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:18:51,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:18:51,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:18:51,415 INFO L87 Difference]: Start difference. First operand 528 states and 1405 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 20:18:54,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:54,047 INFO L93 Difference]: Finished difference Result 1039 states and 2842 transitions. [2022-11-18 20:18:54,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 20:18:54,048 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 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 24 [2022-11-18 20:18:54,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:54,050 INFO L225 Difference]: With dead ends: 1039 [2022-11-18 20:18:54,050 INFO L226 Difference]: Without dead ends: 901 [2022-11-18 20:18:54,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:18:54,051 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 101 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:54,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 14 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 277 Invalid, 0 Unknown, 189 Unchecked, 1.3s Time] [2022-11-18 20:18:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-11-18 20:18:54,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 561. [2022-11-18 20:18:54,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 559 states have (on average 2.6565295169946332) internal successors, (1485), 560 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states 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 20:18:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 1485 transitions. [2022-11-18 20:18:54,061 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 1485 transitions. Word has length 24 [2022-11-18 20:18:54,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:54,061 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 1485 transitions. [2022-11-18 20:18:54,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 20:18:54,061 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 1485 transitions. [2022-11-18 20:18:54,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:18:54,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:54,063 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:54,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (52)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:54,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:18:54,275 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:18:54,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:54,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1878167899, now seen corresponding path program 19 times [2022-11-18 20:18:54,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:18:54,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680403929] [2022-11-18 20:18:54,275 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:18:54,275 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 20:18:54,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:18:54,276 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:18:54,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (53)] Waiting until timeout for monitored process [2022-11-18 20:18:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:54,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:18:54,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:54,635 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 7 treesize of output 5 [2022-11-18 20:18:54,655 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 20:18:54,734 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:18:54,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:18:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:18:54,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:55,153 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 166 treesize of output 162 [2022-11-18 20:18:55,382 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:18:55,382 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 256 treesize of output 164 [2022-11-18 20:18:55,393 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 92 treesize of output 88 [2022-11-18 20:19:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:19:00,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:19:00,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680403929] [2022-11-18 20:19:00,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680403929] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:00,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:19:00,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 20:19:00,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570168440] [2022-11-18 20:19:00,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:00,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:19:00,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:19:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:19:00,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:19:00,798 INFO L87 Difference]: Start difference. First operand 561 states and 1485 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:19:02,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:02,797 INFO L93 Difference]: Finished difference Result 781 states and 2125 transitions. [2022-11-18 20:19:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:19:02,798 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 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 25 [2022-11-18 20:19:02,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:02,800 INFO L225 Difference]: With dead ends: 781 [2022-11-18 20:19:02,800 INFO L226 Difference]: Without dead ends: 781 [2022-11-18 20:19:02,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:19:02,800 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 82 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:02,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 0 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 245 Invalid, 0 Unknown, 121 Unchecked, 1.4s Time] [2022-11-18 20:19:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-11-18 20:19:02,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 569. [2022-11-18 20:19:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 567 states have (on average 2.6560846560846563) internal successors, (1506), 568 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states 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 20:19:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1506 transitions. [2022-11-18 20:19:02,817 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1506 transitions. Word has length 25 [2022-11-18 20:19:02,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:02,817 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 1506 transitions. [2022-11-18 20:19:02,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:19:02,817 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1506 transitions. [2022-11-18 20:19:02,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:19:02,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:02,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:02,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (53)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:03,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:19:03,033 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:19:03,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:03,033 INFO L85 PathProgramCache]: Analyzing trace with hash -826937671, now seen corresponding path program 20 times [2022-11-18 20:19:03,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:19:03,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576895077] [2022-11-18 20:19:03,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:19:03,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:19:03,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:19:03,035 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:19:03,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (54)] Waiting until timeout for monitored process [2022-11-18 20:19:03,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:19:03,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:03,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:19:03,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:03,433 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 7 treesize of output 5 [2022-11-18 20:19:03,456 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 20:19:03,554 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:19:03,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:19:03,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:19:03,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:03,957 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 166 treesize of output 162 [2022-11-18 20:19:04,199 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:19:04,199 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 256 treesize of output 164 [2022-11-18 20:19:04,212 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 92 treesize of output 88 [2022-11-18 20:19:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:19:09,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:19:09,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576895077] [2022-11-18 20:19:09,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576895077] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:09,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:19:09,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 20:19:09,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202738457] [2022-11-18 20:19:09,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:09,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:19:09,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:19:09,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:19:09,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:19:09,876 INFO L87 Difference]: Start difference. First operand 569 states and 1506 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 20:19:12,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:12,024 INFO L93 Difference]: Finished difference Result 789 states and 2107 transitions. [2022-11-18 20:19:12,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:19:12,025 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 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 26 [2022-11-18 20:19:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:12,027 INFO L225 Difference]: With dead ends: 789 [2022-11-18 20:19:12,027 INFO L226 Difference]: Without dead ends: 627 [2022-11-18 20:19:12,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:19:12,027 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:12,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 4 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 299 Invalid, 0 Unknown, 134 Unchecked, 1.6s Time] [2022-11-18 20:19:12,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-11-18 20:19:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 479. [2022-11-18 20:19:12,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 2.6331236897274635) internal successors, (1256), 478 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states 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 20:19:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1256 transitions. [2022-11-18 20:19:12,036 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1256 transitions. Word has length 26 [2022-11-18 20:19:12,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:12,036 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 1256 transitions. [2022-11-18 20:19:12,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 20:19:12,037 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1256 transitions. [2022-11-18 20:19:12,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:19:12,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:12,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:12,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (54)] Ended with exit code 0 [2022-11-18 20:19:12,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:19:12,238 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:19:12,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:12,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1894800199, now seen corresponding path program 21 times [2022-11-18 20:19:12,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:19:12,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332769696] [2022-11-18 20:19:12,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:19:12,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:19:12,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:19:12,241 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:19:12,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (55)] Waiting until timeout for monitored process [2022-11-18 20:19:12,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:19:12,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:12,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:19:12,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:12,783 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 20:19:12,783 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 20:19:12,862 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 13 treesize of output 9 [2022-11-18 20:19:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:13,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:13,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:19:13,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332769696] [2022-11-18 20:19:13,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332769696] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:13,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:19:13,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-18 20:19:13,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661864205] [2022-11-18 20:19:13,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:13,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:19:13,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:19:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:19:13,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:19:13,997 INFO L87 Difference]: Start difference. First operand 479 states and 1256 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:19:15,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:15,172 INFO L93 Difference]: Finished difference Result 1040 states and 2494 transitions. [2022-11-18 20:19:15,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:19:15,173 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 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 26 [2022-11-18 20:19:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:15,175 INFO L225 Difference]: With dead ends: 1040 [2022-11-18 20:19:15,175 INFO L226 Difference]: Without dead ends: 666 [2022-11-18 20:19:15,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:19:15,175 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 102 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:15,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 41 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:19:15,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-11-18 20:19:15,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 625. [2022-11-18 20:19:15,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 623 states have (on average 2.463884430176565) internal successors, (1535), 624 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states 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 20:19:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1535 transitions. [2022-11-18 20:19:15,189 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1535 transitions. Word has length 26 [2022-11-18 20:19:15,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:15,190 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 1535 transitions. [2022-11-18 20:19:15,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:19:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1535 transitions. [2022-11-18 20:19:15,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:19:15,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:15,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:15,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (55)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:15,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:19:15,406 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:19:15,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:15,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2065778802, now seen corresponding path program 22 times [2022-11-18 20:19:15,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:19:15,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339179918] [2022-11-18 20:19:15,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:19:15,407 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 20:19:15,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:19:15,407 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:19:15,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (56)] Waiting until timeout for monitored process [2022-11-18 20:19:15,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:19:15,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:15,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:19:15,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:15,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 9 [2022-11-18 20:19:15,850 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 9 treesize of output 7 [2022-11-18 20:19:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:15,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:16,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:19:16,103 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 328 treesize of output 188 [2022-11-18 20:19:16,113 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 188 treesize of output 184 [2022-11-18 20:19:16,122 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 184 treesize of output 180 [2022-11-18 20:19:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:16,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:19:16,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339179918] [2022-11-18 20:19:16,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339179918] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:16,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:19:16,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2022-11-18 20:19:16,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774778548] [2022-11-18 20:19:16,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:16,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:19:16,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:19:16,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:19:16,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:19:16,961 INFO L87 Difference]: Start difference. First operand 625 states and 1535 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 20:19:17,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:17,569 INFO L93 Difference]: Finished difference Result 534 states and 1303 transitions. [2022-11-18 20:19:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:19:17,571 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 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 26 [2022-11-18 20:19:17,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:17,572 INFO L225 Difference]: With dead ends: 534 [2022-11-18 20:19:17,572 INFO L226 Difference]: Without dead ends: 452 [2022-11-18 20:19:17,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:19:17,573 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 55 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:17,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 34 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 54 Unchecked, 0.4s Time] [2022-11-18 20:19:17,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-18 20:19:17,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2022-11-18 20:19:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 450 states have (on average 2.637777777777778) internal successors, (1187), 451 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states 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 20:19:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1187 transitions. [2022-11-18 20:19:17,583 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1187 transitions. Word has length 26 [2022-11-18 20:19:17,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:17,584 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 1187 transitions. [2022-11-18 20:19:17,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 20:19:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1187 transitions. [2022-11-18 20:19:17,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:19:17,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:17,585 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:17,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (56)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:17,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:19:17,801 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:19:17,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash 193907947, now seen corresponding path program 23 times [2022-11-18 20:19:17,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:19:17,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352729677] [2022-11-18 20:19:17,802 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:19:17,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:19:17,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:19:17,803 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:19:17,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (57)] Waiting until timeout for monitored process [2022-11-18 20:19:18,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 20:19:18,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:18,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:19:18,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:18,416 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 20:19:18,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 11 [2022-11-18 20:19:18,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 9 [2022-11-18 20:19:18,487 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 20:19:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:18,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:19,078 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:19:19,078 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 328 treesize of output 188 [2022-11-18 20:19:19,091 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 188 treesize of output 184 [2022-11-18 20:19:19,104 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 184 treesize of output 180 [2022-11-18 20:19:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:20,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:19:20,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352729677] [2022-11-18 20:19:20,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352729677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:20,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:19:20,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 20:19:20,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129416285] [2022-11-18 20:19:20,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:20,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:19:20,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:19:20,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:19:20,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:19:20,459 INFO L87 Difference]: Start difference. First operand 452 states and 1187 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 20:19:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:22,902 INFO L93 Difference]: Finished difference Result 1676 states and 4213 transitions. [2022-11-18 20:19:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:19:22,904 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 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 27 [2022-11-18 20:19:22,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:22,906 INFO L225 Difference]: With dead ends: 1676 [2022-11-18 20:19:22,907 INFO L226 Difference]: Without dead ends: 1657 [2022-11-18 20:19:22,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:19:22,907 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 206 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:22,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 48 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 20:19:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2022-11-18 20:19:22,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1377. [2022-11-18 20:19:22,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1375 states have (on average 2.6763636363636363) internal successors, (3680), 1376 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states 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 20:19:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 3680 transitions. [2022-11-18 20:19:22,935 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 3680 transitions. Word has length 27 [2022-11-18 20:19:22,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:22,935 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 3680 transitions. [2022-11-18 20:19:22,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 20:19:22,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 3680 transitions. [2022-11-18 20:19:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:19:22,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:22,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:22,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (57)] Ended with exit code 0 [2022-11-18 20:19:23,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:19:23,147 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:19:23,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:23,147 INFO L85 PathProgramCache]: Analyzing trace with hash -140480348, now seen corresponding path program 24 times [2022-11-18 20:19:23,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:19:23,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214929657] [2022-11-18 20:19:23,147 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:19:23,147 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 20:19:23,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:19:23,148 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:19:23,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (58)] Waiting until timeout for monitored process [2022-11-18 20:19:23,414 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 20:19:23,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:23,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:19:23,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:23,447 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 510 treesize of output 494 [2022-11-18 20:19:23,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:19:23,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:19:23,900 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 51 treesize of output 47 [2022-11-18 20:19:24,036 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:19:24,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:19:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:19:24,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:24,588 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_2049 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2049) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0))) (forall ((v_ArrVal_2049 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2049) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0) (_ bv1 32)))))) is different from false [2022-11-18 20:19:24,676 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 166 treesize of output 162 [2022-11-18 20:19:24,990 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:19:24,990 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 352 treesize of output 260 [2022-11-18 20:19:25,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 92 [2022-11-18 20:19:25,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 65 [2022-11-18 20:19:25,043 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 92 treesize of output 88 [2022-11-18 20:19:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-11-18 20:19:33,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:19:33,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214929657] [2022-11-18 20:19:33,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214929657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:33,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:19:33,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-18 20:19:33,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995515034] [2022-11-18 20:19:33,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:33,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:19:33,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:19:33,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:19:33,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2022-11-18 20:19:33,767 INFO L87 Difference]: Start difference. First operand 1377 states and 3680 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 20:19:35,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:35,536 INFO L93 Difference]: Finished difference Result 2008 states and 5341 transitions. [2022-11-18 20:19:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:19:35,538 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 27 [2022-11-18 20:19:35,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:35,541 INFO L225 Difference]: With dead ends: 2008 [2022-11-18 20:19:35,541 INFO L226 Difference]: Without dead ends: 1996 [2022-11-18 20:19:35,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=98, Invalid=367, Unknown=1, NotChecked=40, Total=506 [2022-11-18 20:19:35,542 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 85 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:35,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 18 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 179 Invalid, 0 Unknown, 187 Unchecked, 0.9s Time] [2022-11-18 20:19:35,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2022-11-18 20:19:35,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1706. [2022-11-18 20:19:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1704 states have (on average 2.7294600938967135) internal successors, (4651), 1705 states have internal predecessors, (4651), 0 states have call successors, (0), 0 states 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 20:19:35,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 4651 transitions. [2022-11-18 20:19:35,572 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 4651 transitions. Word has length 27 [2022-11-18 20:19:35,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:35,572 INFO L495 AbstractCegarLoop]: Abstraction has 1706 states and 4651 transitions. [2022-11-18 20:19:35,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 20:19:35,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 4651 transitions. [2022-11-18 20:19:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:19:35,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:35,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:35,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (58)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:35,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:19:35,776 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 20:19:35,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:35,776 INFO L85 PathProgramCache]: Analyzing trace with hash -708417544, now seen corresponding path program 25 times [2022-11-18 20:19:35,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:19:35,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668061594] [2022-11-18 20:19:35,777 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:19:35,777 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 20:19:35,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:19:35,778 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 20:19:35,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8904afa1-1070-4705-a7a2-6f5c94d8571a/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 (59)] Waiting until timeout for monitored process [2022-11-18 20:19:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:19:36,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:36,096 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 250 treesize of output 242 [2022-11-18 20:19:36,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:19:36,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-11-18 20:19:36,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2022-11-18 20:19:36,760 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 51 treesize of output 47 [2022-11-18 20:19:36,904 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:19:36,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-18 20:19:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:19:37,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:37,403 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (bvmul (_ bv4 32) c_~front~0))) (let ((.cse1 (bvadd c_~queue~0.offset (_ bv3 32) .cse6)) (.cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse6)) (.cse3 (bvadd c_~queue~0.offset .cse6 (_ bv1 32))) (.cse4 (bvadd c_~queue~0.offset .cse6))) (and (forall ((v_ArrVal_2093 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (_ bv0 32) (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2093) c_~queue~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) c_~sum~0))) (forall ((v_ArrVal_2093 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2093) c_~queue~0.base))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) c_~sum~0) (_ bv1 32)))))) is different from false [2022-11-18 20:19:37,499 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 166 treesize of output 162 [2022-11-18 20:19:37,503 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 162 treesize of output 158 [2022-11-18 20:19:39,404 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:19:39,405 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 282 treesize of output 260 [2022-11-18 20:19:39,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 101 [2022-11-18 20:19:39,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:39,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:39,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:39,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:39,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:39,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:39,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:39,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:39,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:39,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:39,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:39,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:39,576 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:19:39,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 121 treesize of output 115 [2022-11-18 20:19:52,097 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:19:52,097 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 282 treesize of output 260 [2022-11-18 20:19:52,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 101 [2022-11-18 20:19:52,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:52,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:52,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:52,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:52,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:52,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:52,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:52,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:52,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:52,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:52,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:52,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:19:52,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:19:52,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 121 treesize of output 115