./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-e04fb08 [2022-11-16 12:04:14,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:04:14,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:04:14,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:04:14,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:04:14,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:04:14,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:04:14,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:04:14,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:04:14,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:04:14,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:04:14,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:04:14,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:04:14,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:04:14,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:04:14,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:04:14,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:04:14,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:04:14,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:04:14,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:04:14,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:04:14,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:04:14,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:04:14,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:04:14,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:04:14,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:04:14,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:04:14,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:04:14,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:04:14,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:04:14,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:04:14,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:04:14,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:04:14,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:04:14,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:04:14,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:04:14,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:04:14,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:04:14,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:04:14,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:04:14,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:04:14,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:04:14,651 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:04:14,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:04:14,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:04:14,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:04:14,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:04:14,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:04:14,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:04:14,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:04:14,655 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:04:14,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:04:14,656 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:04:14,656 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:04:14,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:04:14,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:04:14,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:04:14,657 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:04:14,657 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:04:14,658 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:04:14,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:04:14,658 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:04:14,658 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:04:14,658 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:04:14,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:04:14,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:04:14,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:04:14,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:04:14,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:04:14,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:04:14,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:04:14,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:04:14,660 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_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 238e609d3671ff2de494998b0abc6a14651375b5eb423e7b66fc3d987b466268 [2022-11-16 12:04:14,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:04:14,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:04:14,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:04:14,972 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:04:14,973 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:04:14,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2022-11-16 12:04:15,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/data/1815fac0e/8c6be99a4f894cc5ad06a1f088c67e0c/FLAGfd7ac83c7 [2022-11-16 12:04:15,680 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:04:15,681 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2022-11-16 12:04:15,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/data/1815fac0e/8c6be99a4f894cc5ad06a1f088c67e0c/FLAGfd7ac83c7 [2022-11-16 12:04:16,014 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/data/1815fac0e/8c6be99a4f894cc5ad06a1f088c67e0c [2022-11-16 12:04:16,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:04:16,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:04:16,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:04:16,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:04:16,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:04:16,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:04:16" (1/1) ... [2022-11-16 12:04:16,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b3a0c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:16, skipping insertion in model container [2022-11-16 12:04:16,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:04:16" (1/1) ... [2022-11-16 12:04:16,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:04:16,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:04:16,281 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c[3107,3120] [2022-11-16 12:04:16,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:04:16,300 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-16 12:04:16,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5da3defa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:16, skipping insertion in model container [2022-11-16 12:04:16,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:04:16,302 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 12:04:16,304 INFO L158 Benchmark]: Toolchain (without parser) took 281.75ms. Allocated memory is still 144.7MB. Free memory was 111.5MB in the beginning and 121.1MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:04:16,305 INFO L158 Benchmark]: CDTParser took 10.94ms. Allocated memory is still 88.1MB. Free memory was 41.0MB in the beginning and 59.8MB in the end (delta: -18.8MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2022-11-16 12:04:16,306 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.21ms. Allocated memory is still 144.7MB. Free memory was 111.2MB in the beginning and 121.1MB in the end (delta: -9.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 12:04:16,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 10.94ms. Allocated memory is still 88.1MB. Free memory was 41.0MB in the beginning and 59.8MB in the end (delta: -18.8MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.21ms. Allocated memory is still 144.7MB. Free memory was 111.2MB in the beginning and 121.1MB in the end (delta: -9.9MB). Peak memory consumption was 6.3MB. 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_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-e04fb08 [2022-11-16 12:04:18,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:04:18,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:04:18,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:04:18,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:04:18,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:04:18,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:04:18,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:04:18,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:04:18,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:04:18,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:04:18,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:04:18,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:04:18,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:04:18,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:04:18,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:04:18,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:04:18,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:04:18,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:04:18,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:04:18,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:04:18,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:04:18,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:04:18,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:04:18,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:04:18,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:04:18,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:04:18,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:04:18,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:04:18,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:04:18,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:04:18,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:04:18,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:04:18,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:04:18,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:04:18,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:04:18,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:04:18,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:04:18,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:04:18,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:04:18,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:04:18,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 12:04:18,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:04:18,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:04:18,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:04:18,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:04:18,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:04:18,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:04:18,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:04:18,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:04:18,801 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:04:18,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:04:18,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:04:18,803 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:04:18,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:04:18,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:04:18,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:04:18,804 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:04:18,804 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:04:18,805 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:04:18,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:04:18,805 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:04:18,805 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:04:18,806 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:04:18,806 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:04:18,806 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:04:18,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:04:18,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:04:18,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:04:18,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:04:18,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:04:18,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:04:18,809 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:04:18,809 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:04:18,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:04:18,810 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_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 238e609d3671ff2de494998b0abc6a14651375b5eb423e7b66fc3d987b466268 [2022-11-16 12:04:19,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:04:19,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:04:19,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:04:19,242 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:04:19,245 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:04:19,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2022-11-16 12:04:19,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/data/fce748f5e/917a4af33754438189c598234e3ef680/FLAG18e462e96 [2022-11-16 12:04:19,975 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:04:19,976 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2022-11-16 12:04:19,984 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/data/fce748f5e/917a4af33754438189c598234e3ef680/FLAG18e462e96 [2022-11-16 12:04:20,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/data/fce748f5e/917a4af33754438189c598234e3ef680 [2022-11-16 12:04:20,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:04:20,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:04:20,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:04:20,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:04:20,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:04:20,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:04:20" (1/1) ... [2022-11-16 12:04:20,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26929c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20, skipping insertion in model container [2022-11-16 12:04:20,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:04:20" (1/1) ... [2022-11-16 12:04:20,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:04:20,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:04:20,374 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c[3107,3120] [2022-11-16 12:04:20,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:04:20,418 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 12:04:20,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:04:20,459 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c[3107,3120] [2022-11-16 12:04:20,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:04:20,482 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:04:20,528 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c[3107,3120] [2022-11-16 12:04:20,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:04:20,560 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:04:20,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20 WrapperNode [2022-11-16 12:04:20,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:04:20,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:04:20,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:04:20,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:04:20,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20" (1/1) ... [2022-11-16 12:04:20,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20" (1/1) ... [2022-11-16 12:04:20,638 INFO L138 Inliner]: procedures = 27, calls = 52, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 158 [2022-11-16 12:04:20,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:04:20,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:04:20,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:04:20,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:04:20,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20" (1/1) ... [2022-11-16 12:04:20,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20" (1/1) ... [2022-11-16 12:04:20,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20" (1/1) ... [2022-11-16 12:04:20,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20" (1/1) ... [2022-11-16 12:04:20,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20" (1/1) ... [2022-11-16 12:04:20,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20" (1/1) ... [2022-11-16 12:04:20,700 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20" (1/1) ... [2022-11-16 12:04:20,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20" (1/1) ... [2022-11-16 12:04:20,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:04:20,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:04:20,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:04:20,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:04:20,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20" (1/1) ... [2022-11-16 12:04:20,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:04:20,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:20,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:04:20,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:04:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:04:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:04:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:04:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 12:04:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:04:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:04:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:04:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:04:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:04:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:04:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:04:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:04:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:04:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:04:20,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:04:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:04:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 12:04:20,809 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:04:20,964 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:04:20,966 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:04:21,606 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:04:21,810 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:04:21,810 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:04:21,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:04:21 BoogieIcfgContainer [2022-11-16 12:04:21,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:04:21,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:04:21,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:04:21,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:04:21,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:04:20" (1/3) ... [2022-11-16 12:04:21,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b53de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:04:21, skipping insertion in model container [2022-11-16 12:04:21,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:20" (2/3) ... [2022-11-16 12:04:21,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b53de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:04:21, skipping insertion in model container [2022-11-16 12:04:21,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:04:21" (3/3) ... [2022-11-16 12:04:21,831 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2022-11-16 12:04:21,853 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:04:21,853 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-16 12:04:21,853 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:04:22,006 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:04:22,059 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 12:04:22,080 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 163 transitions, 350 flow [2022-11-16 12:04:22,083 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 163 transitions, 350 flow [2022-11-16 12:04:22,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 350 flow [2022-11-16 12:04:22,181 INFO L130 PetriNetUnfolder]: 10/160 cut-off events. [2022-11-16 12:04:22,181 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:04:22,187 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. [2022-11-16 12:04:22,190 INFO L119 LiptonReduction]: Number of co-enabled transitions 2120 [2022-11-16 12:04:53,676 INFO L134 LiptonReduction]: Checked pairs total: 3739 [2022-11-16 12:04:53,677 INFO L136 LiptonReduction]: Total number of compositions: 161 [2022-11-16 12:04:53,686 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 49 transitions, 122 flow [2022-11-16 12:04:53,762 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) [2022-11-16 12:04:53,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:04:53,795 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;@502a6a8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:04:53,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-16 12:04:53,802 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) [2022-11-16 12:04:53,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:04:53,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:53,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:04:53,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:04:53,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:53,817 INFO L85 PathProgramCache]: Analyzing trace with hash 22098, now seen corresponding path program 1 times [2022-11-16 12:04:53,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:04:53,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275362105] [2022-11-16 12:04:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:53,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:04:53,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:04:53,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:04:53,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:04:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:53,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:04:53,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:54,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:04:54,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:04:54,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:04:54,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:04:54,276 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:04:54,277 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 [2022-11-16 12:04:54,314 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 12:04:54,315 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 [2022-11-16 12:04:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:54,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:54,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:04:54,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275362105] [2022-11-16 12:04:54,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275362105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:54,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:54,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:04:54,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610264695] [2022-11-16 12:04:54,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:54,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:04:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:04:54,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:04:54,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:04:54,414 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) [2022-11-16 12:04:54,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:54,652 INFO L93 Difference]: Finished difference Result 682 states and 2059 transitions. [2022-11-16 12:04:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:04:54,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 12:04:54,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:54,678 INFO L225 Difference]: With dead ends: 682 [2022-11-16 12:04:54,678 INFO L226 Difference]: Without dead ends: 682 [2022-11-16 12:04:54,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:04:54,682 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 [2022-11-16 12:04:54,683 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] [2022-11-16 12:04:54,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-11-16 12:04:54,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2022-11-16 12:04:54,822 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) [2022-11-16 12:04:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 2059 transitions. [2022-11-16 12:04:54,846 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 2059 transitions. Word has length 2 [2022-11-16 12:04:54,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:54,855 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 2059 transitions. [2022-11-16 12:04:54,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:54,856 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 2059 transitions. [2022-11-16 12:04:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:04:54,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:54,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:04:54,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:55,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:04:55,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:04:55,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:55,059 INFO L85 PathProgramCache]: Analyzing trace with hash 22019, now seen corresponding path program 1 times [2022-11-16 12:04:55,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:04:55,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374600891] [2022-11-16 12:04:55,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:55,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:04:55,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:04:55,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:04:55,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:04:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:55,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:04:55,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:55,250 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-16 12:04:55,250 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 [2022-11-16 12:04:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:55,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:55,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:04:55,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374600891] [2022-11-16 12:04:55,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374600891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:55,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:55,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:04:55,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385062744] [2022-11-16 12:04:55,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:55,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:04:55,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:04:55,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:04:55,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:04:55,271 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) [2022-11-16 12:04:55,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:55,468 INFO L93 Difference]: Finished difference Result 681 states and 2057 transitions. [2022-11-16 12:04:55,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:04:55,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 12:04:55,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:55,477 INFO L225 Difference]: With dead ends: 681 [2022-11-16 12:04:55,477 INFO L226 Difference]: Without dead ends: 681 [2022-11-16 12:04:55,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:04:55,479 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 [2022-11-16 12:04:55,480 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] [2022-11-16 12:04:55,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-16 12:04:55,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2022-11-16 12:04:55,557 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) [2022-11-16 12:04:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 2057 transitions. [2022-11-16 12:04:55,562 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 2057 transitions. Word has length 2 [2022-11-16 12:04:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:55,567 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 2057 transitions. [2022-11-16 12:04:55,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 2057 transitions. [2022-11-16 12:04:55,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:04:55,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:55,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:04:55,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:55,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:04:55,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:04:55,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash 22020, now seen corresponding path program 1 times [2022-11-16 12:04:55,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:04:55,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839784828] [2022-11-16 12:04:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:55,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:04:55,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:04:55,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:04:55,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:04:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:55,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:04:55,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:56,010 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-16 12:04:56,010 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 [2022-11-16 12:04:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:56,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:56,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:04:56,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839784828] [2022-11-16 12:04:56,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839784828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:56,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:56,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:04:56,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830917480] [2022-11-16 12:04:56,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:56,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:04:56,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:04:56,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:04:56,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:04:56,067 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) [2022-11-16 12:04:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:56,509 INFO L93 Difference]: Finished difference Result 1357 states and 4103 transitions. [2022-11-16 12:04:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:04:56,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 12:04:56,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:56,520 INFO L225 Difference]: With dead ends: 1357 [2022-11-16 12:04:56,521 INFO L226 Difference]: Without dead ends: 1357 [2022-11-16 12:04:56,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:04:56,530 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:56,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:04:56,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2022-11-16 12:04:56,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 681. [2022-11-16 12:04:56,568 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) [2022-11-16 12:04:56,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 2056 transitions. [2022-11-16 12:04:56,572 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 2056 transitions. Word has length 2 [2022-11-16 12:04:56,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:56,573 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 2056 transitions. [2022-11-16 12:04:56,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:56,573 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 2056 transitions. [2022-11-16 12:04:56,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:04:56,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:56,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:04:56,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:56,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:04:56,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:04:56,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash 22100, now seen corresponding path program 1 times [2022-11-16 12:04:56,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:04:56,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277342059] [2022-11-16 12:04:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:56,788 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 [2022-11-16 12:04:56,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:04:56,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:04:56,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:04:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:56,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:04:56,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:56,960 INFO L321 Elim1Store]: treesize reduction 115, result has 16.1 percent of original size [2022-11-16 12:04:56,961 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 [2022-11-16 12:04:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:57,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:57,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:04:57,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277342059] [2022-11-16 12:04:57,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277342059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:57,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:57,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:04:57,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324269458] [2022-11-16 12:04:57,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:57,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:04:57,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:04:57,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:04:57,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:04:57,035 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) [2022-11-16 12:04:57,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:57,211 INFO L93 Difference]: Finished difference Result 681 states and 2055 transitions. [2022-11-16 12:04:57,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:04:57,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 12:04:57,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:57,216 INFO L225 Difference]: With dead ends: 681 [2022-11-16 12:04:57,216 INFO L226 Difference]: Without dead ends: 681 [2022-11-16 12:04:57,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:04:57,218 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 [2022-11-16 12:04:57,218 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] [2022-11-16 12:04:57,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-16 12:04:57,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2022-11-16 12:04:57,241 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) [2022-11-16 12:04:57,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 2055 transitions. [2022-11-16 12:04:57,246 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 2055 transitions. Word has length 2 [2022-11-16 12:04:57,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:57,246 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 2055 transitions. [2022-11-16 12:04:57,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:57,247 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 2055 transitions. [2022-11-16 12:04:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:04:57,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:57,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:04:57,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:57,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:04:57,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:04:57,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:57,462 INFO L85 PathProgramCache]: Analyzing trace with hash 685188, now seen corresponding path program 1 times [2022-11-16 12:04:57,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:04:57,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526032128] [2022-11-16 12:04:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:57,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:04:57,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:04:57,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:04:57,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 12:04:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:57,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:04:57,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:57,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:04:57,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:04:57,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:04:57,724 INFO L321 Elim1Store]: treesize reduction 36, result has 43.8 percent of original size [2022-11-16 12:04:57,725 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 [2022-11-16 12:04:57,760 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 12:04:57,760 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 [2022-11-16 12:04:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:58,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:04:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:58,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:04:58,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526032128] [2022-11-16 12:04:58,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526032128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:04:58,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:04:58,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-16 12:04:58,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881771811] [2022-11-16 12:04:58,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:04:58,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:04:58,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:04:58,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:04:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:04:58,347 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) [2022-11-16 12:04:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:59,188 INFO L93 Difference]: Finished difference Result 683 states and 2063 transitions. [2022-11-16 12:04:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:04:59,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 12:04:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:59,194 INFO L225 Difference]: With dead ends: 683 [2022-11-16 12:04:59,195 INFO L226 Difference]: Without dead ends: 683 [2022-11-16 12:04:59,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:04:59,196 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 50 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2022-11-16 12:04:59,196 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] [2022-11-16 12:04:59,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-11-16 12:04:59,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-11-16 12:04:59,217 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) [2022-11-16 12:04:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 2063 transitions. [2022-11-16 12:04:59,221 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 2063 transitions. Word has length 3 [2022-11-16 12:04:59,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:59,221 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 2063 transitions. [2022-11-16 12:04:59,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:59,222 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 2063 transitions. [2022-11-16 12:04:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:04:59,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:59,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:04:59,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:59,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:04:59,435 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:04:59,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash 685110, now seen corresponding path program 1 times [2022-11-16 12:04:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:04:59,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224074916] [2022-11-16 12:04:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:59,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:04:59,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:04:59,438 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:04:59,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 12:04:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:59,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:04:59,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:59,652 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-16 12:04:59,652 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 [2022-11-16 12:04:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:59,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:04:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:59,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:04:59,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224074916] [2022-11-16 12:04:59,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224074916] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:04:59,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:04:59,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-16 12:04:59,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200779513] [2022-11-16 12:04:59,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:04:59,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:04:59,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:04:59,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:04:59,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:04:59,983 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) [2022-11-16 12:05:00,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:00,722 INFO L93 Difference]: Finished difference Result 2035 states and 6159 transitions. [2022-11-16 12:05:00,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:05:00,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 12:05:00,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:00,738 INFO L225 Difference]: With dead ends: 2035 [2022-11-16 12:05:00,739 INFO L226 Difference]: Without dead ends: 2035 [2022-11-16 12:05:00,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:00,745 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 235 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:00,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 12 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:05:00,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-11-16 12:05:00,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 684. [2022-11-16 12:05:00,783 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) [2022-11-16 12:05:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 2065 transitions. [2022-11-16 12:05:00,787 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 2065 transitions. Word has length 3 [2022-11-16 12:05:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:00,788 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 2065 transitions. [2022-11-16 12:05:00,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:00,788 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 2065 transitions. [2022-11-16 12:05:00,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:05:00,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:00,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:05:00,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:01,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:01,001 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:01,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:01,002 INFO L85 PathProgramCache]: Analyzing trace with hash 685190, now seen corresponding path program 1 times [2022-11-16 12:05:01,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:01,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210716903] [2022-11-16 12:05:01,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:01,002 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:01,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:01,004 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:01,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 12:05:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:01,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:05:01,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:01,186 INFO L321 Elim1Store]: treesize reduction 115, result has 16.1 percent of original size [2022-11-16 12:05:01,187 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 [2022-11-16 12:05:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:05:01,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:01,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:01,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210716903] [2022-11-16 12:05:01,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210716903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:01,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:01,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:05:01,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431287302] [2022-11-16 12:05:01,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:01,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:01,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:01,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:01,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:01,294 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) [2022-11-16 12:05:01,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:01,445 INFO L93 Difference]: Finished difference Result 683 states and 2061 transitions. [2022-11-16 12:05:01,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:01,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 12:05:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:01,450 INFO L225 Difference]: With dead ends: 683 [2022-11-16 12:05:01,450 INFO L226 Difference]: Without dead ends: 683 [2022-11-16 12:05:01,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:01,451 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 [2022-11-16 12:05:01,452 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] [2022-11-16 12:05:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-11-16 12:05:01,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-11-16 12:05:01,470 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) [2022-11-16 12:05:01,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 2061 transitions. [2022-11-16 12:05:01,473 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 2061 transitions. Word has length 3 [2022-11-16 12:05:01,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:01,474 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 2061 transitions. [2022-11-16 12:05:01,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:01,474 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 2061 transitions. [2022-11-16 12:05:01,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:05:01,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:01,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:05:01,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:01,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:01,696 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:01,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:01,697 INFO L85 PathProgramCache]: Analyzing trace with hash 21253102, now seen corresponding path program 1 times [2022-11-16 12:05:01,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:01,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790310478] [2022-11-16 12:05:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:01,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:01,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:01,698 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:01,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 12:05:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:01,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:05:01,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:01,848 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-16 12:05:01,848 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 [2022-11-16 12:05:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:01,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:01,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:01,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790310478] [2022-11-16 12:05:01,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790310478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:01,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:01,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:05:01,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298906291] [2022-11-16 12:05:01,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:01,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:01,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:01,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:01,950 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) [2022-11-16 12:05:02,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:02,081 INFO L93 Difference]: Finished difference Result 686 states and 2071 transitions. [2022-11-16 12:05:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:02,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 12:05:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:02,086 INFO L225 Difference]: With dead ends: 686 [2022-11-16 12:05:02,086 INFO L226 Difference]: Without dead ends: 686 [2022-11-16 12:05:02,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:02,087 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 [2022-11-16 12:05:02,087 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] [2022-11-16 12:05:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-11-16 12:05:02,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2022-11-16 12:05:02,114 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) [2022-11-16 12:05:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 2071 transitions. [2022-11-16 12:05:02,117 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 2071 transitions. Word has length 4 [2022-11-16 12:05:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:02,117 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 2071 transitions. [2022-11-16 12:05:02,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:02,118 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 2071 transitions. [2022-11-16 12:05:02,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:05:02,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:02,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:05:02,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:02,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:02,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:02,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:02,328 INFO L85 PathProgramCache]: Analyzing trace with hash 21253103, now seen corresponding path program 1 times [2022-11-16 12:05:02,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:02,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119393093] [2022-11-16 12:05:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:02,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:02,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:02,329 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:02,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 12:05:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:02,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:05:02,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:02,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:02,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:02,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:02,535 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-16 12:05:02,535 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 [2022-11-16 12:05:02,551 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 14 treesize of output 12 [2022-11-16 12:05:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:02,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:02,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:02,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119393093] [2022-11-16 12:05:02,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119393093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:02,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:02,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:05:02,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581931616] [2022-11-16 12:05:02,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:02,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:02,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:02,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:02,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:02,633 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) [2022-11-16 12:05:02,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:02,774 INFO L93 Difference]: Finished difference Result 686 states and 2069 transitions. [2022-11-16 12:05:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:02,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 12:05:02,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:02,779 INFO L225 Difference]: With dead ends: 686 [2022-11-16 12:05:02,779 INFO L226 Difference]: Without dead ends: 686 [2022-11-16 12:05:02,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:02,780 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:02,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2022-11-16 12:05:02,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-11-16 12:05:02,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2022-11-16 12:05:02,800 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) [2022-11-16 12:05:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 2069 transitions. [2022-11-16 12:05:02,803 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 2069 transitions. Word has length 4 [2022-11-16 12:05:02,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:02,803 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 2069 transitions. [2022-11-16 12:05:02,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:02,804 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 2069 transitions. [2022-11-16 12:05:02,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:05:02,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:02,804 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-16 12:05:02,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:03,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:03,016 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:03,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:03,017 INFO L85 PathProgramCache]: Analyzing trace with hash 658470468, now seen corresponding path program 2 times [2022-11-16 12:05:03,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:03,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168179905] [2022-11-16 12:05:03,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:05:03,017 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 [2022-11-16 12:05:03,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:03,018 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:03,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 12:05:03,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:05:03,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:05:03,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:05:03,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:03,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:03,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:03,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:03,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:03,287 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:05:03,288 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 [2022-11-16 12:05:03,317 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 12:05:03,317 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 [2022-11-16 12:05:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:05:03,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:03,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:03,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168179905] [2022-11-16 12:05:03,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168179905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:03,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:03,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:05:03,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520605035] [2022-11-16 12:05:03,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:03,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:03,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:03,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:03,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:03,440 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) [2022-11-16 12:05:03,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:03,587 INFO L93 Difference]: Finished difference Result 685 states and 2067 transitions. [2022-11-16 12:05:03,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:03,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:05:03,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:03,593 INFO L225 Difference]: With dead ends: 685 [2022-11-16 12:05:03,593 INFO L226 Difference]: Without dead ends: 685 [2022-11-16 12:05:03,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:03,594 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:03,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2022-11-16 12:05:03,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-11-16 12:05:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2022-11-16 12:05:03,613 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) [2022-11-16 12:05:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2067 transitions. [2022-11-16 12:05:03,616 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2067 transitions. Word has length 5 [2022-11-16 12:05:03,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:03,617 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 2067 transitions. [2022-11-16 12:05:03,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:03,617 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2067 transitions. [2022-11-16 12:05:03,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:05:03,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:03,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:05:03,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:03,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:03,829 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:03,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash 658482592, now seen corresponding path program 1 times [2022-11-16 12:05:03,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:03,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591860377] [2022-11-16 12:05:03,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:03,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:03,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:03,832 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:03,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 12:05:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:03,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:05:03,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:04,000 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-16 12:05:04,000 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 [2022-11-16 12:05:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:05:04,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:04,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:04,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591860377] [2022-11-16 12:05:04,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591860377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:04,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:04,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:05:04,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72525374] [2022-11-16 12:05:04,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:04,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:04,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:04,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:04,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:04,130 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) [2022-11-16 12:05:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:04,243 INFO L93 Difference]: Finished difference Result 685 states and 2071 transitions. [2022-11-16 12:05:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:04,244 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 [2022-11-16 12:05:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:04,249 INFO L225 Difference]: With dead ends: 685 [2022-11-16 12:05:04,249 INFO L226 Difference]: Without dead ends: 685 [2022-11-16 12:05:04,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:04,250 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 [2022-11-16 12:05:04,250 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] [2022-11-16 12:05:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-11-16 12:05:04,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2022-11-16 12:05:04,269 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) [2022-11-16 12:05:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2071 transitions. [2022-11-16 12:05:04,272 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2071 transitions. Word has length 5 [2022-11-16 12:05:04,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:04,272 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 2071 transitions. [2022-11-16 12:05:04,272 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) [2022-11-16 12:05:04,273 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2071 transitions. [2022-11-16 12:05:04,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:05:04,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:04,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:05:04,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:04,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:04,491 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:04,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:04,491 INFO L85 PathProgramCache]: Analyzing trace with hash 658482593, now seen corresponding path program 1 times [2022-11-16 12:05:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:04,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317074046] [2022-11-16 12:05:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:04,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:04,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:04,493 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:04,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 12:05:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:04,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:05:04,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:04,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:04,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:04,715 INFO L321 Elim1Store]: treesize reduction 49, result has 38.8 percent of original size [2022-11-16 12:05:04,715 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 [2022-11-16 12:05:04,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-16 12:05:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:04,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:05,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:05,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317074046] [2022-11-16 12:05:05,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317074046] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:05,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:05:05,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-16 12:05:05,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337882456] [2022-11-16 12:05:05,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:05,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:05:05,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:05,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:05:05,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:05:05,224 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) [2022-11-16 12:05:05,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:05,373 INFO L93 Difference]: Finished difference Result 691 states and 2087 transitions. [2022-11-16 12:05:05,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:05:05,374 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 [2022-11-16 12:05:05,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:05,378 INFO L225 Difference]: With dead ends: 691 [2022-11-16 12:05:05,378 INFO L226 Difference]: Without dead ends: 691 [2022-11-16 12:05:05,379 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 [2022-11-16 12:05:05,379 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:05,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 19 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 82 Unchecked, 0.1s Time] [2022-11-16 12:05:05,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-11-16 12:05:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 685. [2022-11-16 12:05:05,397 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) [2022-11-16 12:05:05,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2071 transitions. [2022-11-16 12:05:05,400 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2071 transitions. Word has length 5 [2022-11-16 12:05:05,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:05,400 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 2071 transitions. [2022-11-16 12:05:05,400 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) [2022-11-16 12:05:05,400 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2071 transitions. [2022-11-16 12:05:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:05:05,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:05,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:05:05,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:05,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:05,616 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:05,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash 658841609, now seen corresponding path program 1 times [2022-11-16 12:05:05,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:05,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640043963] [2022-11-16 12:05:05,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:05,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:05,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:05,618 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:05,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 12:05:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:05,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:05:05,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:05,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:05,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:05,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640043963] [2022-11-16 12:05:05,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640043963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:05,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:05,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:05:05,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662906625] [2022-11-16 12:05:05,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:05,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:05,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:05,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:05,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:05,713 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) [2022-11-16 12:05:05,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:05,998 INFO L93 Difference]: Finished difference Result 909 states and 2652 transitions. [2022-11-16 12:05:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:05,999 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 [2022-11-16 12:05:05,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:06,004 INFO L225 Difference]: With dead ends: 909 [2022-11-16 12:05:06,005 INFO L226 Difference]: Without dead ends: 909 [2022-11-16 12:05:06,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:06,006 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 [2022-11-16 12:05:06,006 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] [2022-11-16 12:05:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-11-16 12:05:06,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 779. [2022-11-16 12:05:06,027 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) [2022-11-16 12:05:06,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 2362 transitions. [2022-11-16 12:05:06,031 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 2362 transitions. Word has length 5 [2022-11-16 12:05:06,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:06,031 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 2362 transitions. [2022-11-16 12:05:06,031 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) [2022-11-16 12:05:06,031 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 2362 transitions. [2022-11-16 12:05:06,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:05:06,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:06,032 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-16 12:05:06,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:06,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:06,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:06,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:06,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1062251900, now seen corresponding path program 2 times [2022-11-16 12:05:06,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:06,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749198298] [2022-11-16 12:05:06,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:05:06,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:06,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:06,245 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:06,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 12:05:06,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:05:06,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:05:06,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:05:06,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:06,513 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-16 12:05:06,514 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 [2022-11-16 12:05:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:06,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:07,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:07,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749198298] [2022-11-16 12:05:07,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749198298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:07,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:05:07,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-16 12:05:07,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296008246] [2022-11-16 12:05:07,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:07,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:05:07,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:05:07,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:05:07,499 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) [2022-11-16 12:05:13,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:13,387 INFO L93 Difference]: Finished difference Result 7697 states and 23462 transitions. [2022-11-16 12:05:13,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:05:13,388 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 12:05:13,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:13,472 INFO L225 Difference]: With dead ends: 7697 [2022-11-16 12:05:13,472 INFO L226 Difference]: Without dead ends: 7697 [2022-11-16 12:05:13,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:05:13,473 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1102 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s 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, 4.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:13,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 87 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-16 12:05:13,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7697 states. [2022-11-16 12:05:13,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7697 to 785. [2022-11-16 12:05:13,571 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) [2022-11-16 12:05:13,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2374 transitions. [2022-11-16 12:05:13,574 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2374 transitions. Word has length 6 [2022-11-16 12:05:13,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:13,575 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 2374 transitions. [2022-11-16 12:05:13,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:13,575 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2374 transitions. [2022-11-16 12:05:13,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:05:13,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:13,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:05:13,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:13,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:13,791 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:13,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:13,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1050743410, now seen corresponding path program 1 times [2022-11-16 12:05:13,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:13,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650456429] [2022-11-16 12:05:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:13,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:13,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:13,793 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:13,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 12:05:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:13,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:05:13,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:13,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:13,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:13,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650456429] [2022-11-16 12:05:13,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650456429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:13,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:13,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:13,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163487864] [2022-11-16 12:05:13,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:13,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:13,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:13,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:13,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:13,929 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) [2022-11-16 12:05:14,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:14,376 INFO L93 Difference]: Finished difference Result 821 states and 2355 transitions. [2022-11-16 12:05:14,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:05:14,376 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 [2022-11-16 12:05:14,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:14,380 INFO L225 Difference]: With dead ends: 821 [2022-11-16 12:05:14,381 INFO L226 Difference]: Without dead ends: 819 [2022-11-16 12:05:14,383 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 [2022-11-16 12:05:14,384 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:14,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 0 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:05:14,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-11-16 12:05:14,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 735. [2022-11-16 12:05:14,411 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) [2022-11-16 12:05:14,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 2174 transitions. [2022-11-16 12:05:14,414 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 2174 transitions. Word has length 6 [2022-11-16 12:05:14,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:14,414 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 2174 transitions. [2022-11-16 12:05:14,414 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) [2022-11-16 12:05:14,415 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 2174 transitions. [2022-11-16 12:05:14,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:05:14,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:14,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:05:14,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:14,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:14,629 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:14,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:14,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1050590502, now seen corresponding path program 1 times [2022-11-16 12:05:14,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:14,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144221739] [2022-11-16 12:05:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:14,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:14,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:14,631 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:14,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 12:05:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:14,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:05:14,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:14,808 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-16 12:05:14,808 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 [2022-11-16 12:05:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:14,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:14,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:14,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144221739] [2022-11-16 12:05:14,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144221739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:14,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:14,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:05:14,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280981441] [2022-11-16 12:05:14,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:14,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:14,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:14,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:14,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:14,849 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) [2022-11-16 12:05:15,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:15,045 INFO L93 Difference]: Finished difference Result 685 states and 2033 transitions. [2022-11-16 12:05:15,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:15,045 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 [2022-11-16 12:05:15,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:15,077 INFO L225 Difference]: With dead ends: 685 [2022-11-16 12:05:15,077 INFO L226 Difference]: Without dead ends: 685 [2022-11-16 12:05:15,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:15,079 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-16 12:05:15,084 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] [2022-11-16 12:05:15,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-11-16 12:05:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2022-11-16 12:05:15,101 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) [2022-11-16 12:05:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2033 transitions. [2022-11-16 12:05:15,104 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2033 transitions. Word has length 6 [2022-11-16 12:05:15,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:15,105 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 2033 transitions. [2022-11-16 12:05:15,105 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) [2022-11-16 12:05:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2033 transitions. [2022-11-16 12:05:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:05:15,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:15,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:05:15,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:15,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:15,320 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:15,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:15,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1050590501, now seen corresponding path program 1 times [2022-11-16 12:05:15,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:15,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120580617] [2022-11-16 12:05:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:15,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:15,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:15,323 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:15,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 12:05:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:15,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:05:15,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:15,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:15,591 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-16 12:05:15,591 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 [2022-11-16 12:05:15,613 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 [2022-11-16 12:05:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:15,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:15,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:15,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120580617] [2022-11-16 12:05:15,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120580617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:15,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:15,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:05:15,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257396105] [2022-11-16 12:05:15,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:15,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:15,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:15,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:15,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:15,686 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) [2022-11-16 12:05:15,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:15,848 INFO L93 Difference]: Finished difference Result 635 states and 1892 transitions. [2022-11-16 12:05:15,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:15,848 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 [2022-11-16 12:05:15,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:15,850 INFO L225 Difference]: With dead ends: 635 [2022-11-16 12:05:15,850 INFO L226 Difference]: Without dead ends: 635 [2022-11-16 12:05:15,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:15,851 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 [2022-11-16 12:05:15,852 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] [2022-11-16 12:05:15,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-11-16 12:05:15,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2022-11-16 12:05:15,881 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) [2022-11-16 12:05:15,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1892 transitions. [2022-11-16 12:05:15,884 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1892 transitions. Word has length 6 [2022-11-16 12:05:15,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:15,884 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1892 transitions. [2022-11-16 12:05:15,884 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) [2022-11-16 12:05:15,885 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1892 transitions. [2022-11-16 12:05:15,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:05:15,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:15,885 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-16 12:05:15,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:16,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:16,100 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:16,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1429944161, now seen corresponding path program 2 times [2022-11-16 12:05:16,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:16,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939511220] [2022-11-16 12:05:16,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:05:16,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:16,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:16,105 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:16,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 12:05:16,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:05:16,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:05:16,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:05:16,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:16,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:16,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:16,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:16,346 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-16 12:05:16,346 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 [2022-11-16 12:05:16,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-16 12:05:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:05:16,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:16,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:16,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939511220] [2022-11-16 12:05:16,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939511220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:16,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:16,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:05:16,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805437319] [2022-11-16 12:05:16,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:16,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:16,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:16,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:16,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:16,504 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) [2022-11-16 12:05:16,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:16,638 INFO L93 Difference]: Finished difference Result 633 states and 1889 transitions. [2022-11-16 12:05:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:16,639 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 [2022-11-16 12:05:16,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:16,642 INFO L225 Difference]: With dead ends: 633 [2022-11-16 12:05:16,642 INFO L226 Difference]: Without dead ends: 633 [2022-11-16 12:05:16,642 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 [2022-11-16 12:05:16,643 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 [2022-11-16 12:05:16,643 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] [2022-11-16 12:05:16,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-11-16 12:05:16,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 630. [2022-11-16 12:05:16,671 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) [2022-11-16 12:05:16,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1885 transitions. [2022-11-16 12:05:16,675 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1885 transitions. Word has length 7 [2022-11-16 12:05:16,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:16,675 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1885 transitions. [2022-11-16 12:05:16,675 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) [2022-11-16 12:05:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1885 transitions. [2022-11-16 12:05:16,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:05:16,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:16,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:16,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:16,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:16,891 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:16,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:16,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1791431509, now seen corresponding path program 1 times [2022-11-16 12:05:16,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:16,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887326477] [2022-11-16 12:05:16,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:16,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:16,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:16,894 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:16,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 12:05:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:17,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:05:17,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:17,121 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-16 12:05:17,121 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 [2022-11-16 12:05:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:17,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:17,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:17,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887326477] [2022-11-16 12:05:17,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887326477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:17,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:17,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:05:17,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207343041] [2022-11-16 12:05:17,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:17,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:17,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:17,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:17,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:17,159 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) [2022-11-16 12:05:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:17,344 INFO L93 Difference]: Finished difference Result 408 states and 1179 transitions. [2022-11-16 12:05:17,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:05:17,344 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 [2022-11-16 12:05:17,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:17,346 INFO L225 Difference]: With dead ends: 408 [2022-11-16 12:05:17,346 INFO L226 Difference]: Without dead ends: 408 [2022-11-16 12:05:17,346 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 [2022-11-16 12:05:17,347 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 [2022-11-16 12:05:17,347 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] [2022-11-16 12:05:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-11-16 12:05:17,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2022-11-16 12:05:17,357 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) [2022-11-16 12:05:17,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1179 transitions. [2022-11-16 12:05:17,358 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1179 transitions. Word has length 7 [2022-11-16 12:05:17,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:17,359 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 1179 transitions. [2022-11-16 12:05:17,359 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) [2022-11-16 12:05:17,359 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1179 transitions. [2022-11-16 12:05:17,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:05:17,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:17,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:17,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:17,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:17,573 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:17,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:17,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1791431511, now seen corresponding path program 1 times [2022-11-16 12:05:17,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:17,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093133135] [2022-11-16 12:05:17,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:17,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:17,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:17,576 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:17,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 12:05:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:17,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:05:17,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:17,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:17,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:17,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093133135] [2022-11-16 12:05:17,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093133135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:17,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:17,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:05:17,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756133969] [2022-11-16 12:05:17,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:17,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:17,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:17,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:17,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:17,760 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) [2022-11-16 12:05:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:18,070 INFO L93 Difference]: Finished difference Result 511 states and 1392 transitions. [2022-11-16 12:05:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:05:18,071 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 [2022-11-16 12:05:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:18,072 INFO L225 Difference]: With dead ends: 511 [2022-11-16 12:05:18,072 INFO L226 Difference]: Without dead ends: 507 [2022-11-16 12:05:18,073 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 [2022-11-16 12:05:18,073 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 [2022-11-16 12:05:18,074 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] [2022-11-16 12:05:18,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-16 12:05:18,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 473. [2022-11-16 12:05:18,086 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) [2022-11-16 12:05:18,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1334 transitions. [2022-11-16 12:05:18,088 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1334 transitions. Word has length 7 [2022-11-16 12:05:18,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:18,088 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 1334 transitions. [2022-11-16 12:05:18,088 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) [2022-11-16 12:05:18,089 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1334 transitions. [2022-11-16 12:05:18,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:05:18,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:18,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:18,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:18,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:18,304 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:18,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:18,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1739719781, now seen corresponding path program 1 times [2022-11-16 12:05:18,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:18,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862443259] [2022-11-16 12:05:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:18,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:18,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:18,308 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:18,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 12:05:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:18,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:05:18,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:18,587 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-16 12:05:18,587 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 [2022-11-16 12:05:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:18,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:20,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:20,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862443259] [2022-11-16 12:05:20,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862443259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:20,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:05:20,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-16 12:05:20,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383147495] [2022-11-16 12:05:20,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:20,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:05:20,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:20,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:05:20,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:05:20,297 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) [2022-11-16 12:05:21,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:21,484 INFO L93 Difference]: Finished difference Result 503 states and 1421 transitions. [2022-11-16 12:05:21,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:05:21,485 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 [2022-11-16 12:05:21,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:21,487 INFO L225 Difference]: With dead ends: 503 [2022-11-16 12:05:21,488 INFO L226 Difference]: Without dead ends: 503 [2022-11-16 12:05:21,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:05:21,489 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 [2022-11-16 12:05:21,489 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] [2022-11-16 12:05:21,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-16 12:05:21,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2022-11-16 12:05:21,502 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) [2022-11-16 12:05:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 1421 transitions. [2022-11-16 12:05:21,505 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 1421 transitions. Word has length 8 [2022-11-16 12:05:21,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:21,505 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 1421 transitions. [2022-11-16 12:05:21,506 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) [2022-11-16 12:05:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 1421 transitions. [2022-11-16 12:05:21,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:05:21,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:21,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:21,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-16 12:05:21,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:21,720 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:21,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:21,721 INFO L85 PathProgramCache]: Analyzing trace with hash -300142805, now seen corresponding path program 1 times [2022-11-16 12:05:21,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:21,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032081558] [2022-11-16 12:05:21,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:21,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:21,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:21,722 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:21,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-16 12:05:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:21,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:05:21,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:21,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:21,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:21,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032081558] [2022-11-16 12:05:21,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032081558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:21,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:21,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:05:21,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201776417] [2022-11-16 12:05:21,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:21,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:21,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:21,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:21,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:21,854 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) [2022-11-16 12:05:22,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:22,007 INFO L93 Difference]: Finished difference Result 415 states and 1135 transitions. [2022-11-16 12:05:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:22,007 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 [2022-11-16 12:05:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:22,009 INFO L225 Difference]: With dead ends: 415 [2022-11-16 12:05:22,009 INFO L226 Difference]: Without dead ends: 415 [2022-11-16 12:05:22,010 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 [2022-11-16 12:05:22,010 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:22,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:05:22,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-11-16 12:05:22,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2022-11-16 12:05:22,021 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) [2022-11-16 12:05:22,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 1135 transitions. [2022-11-16 12:05:22,023 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 1135 transitions. Word has length 8 [2022-11-16 12:05:22,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:22,024 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 1135 transitions. [2022-11-16 12:05:22,024 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) [2022-11-16 12:05:22,024 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 1135 transitions. [2022-11-16 12:05:22,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:05:22,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:22,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:22,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:22,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:22,239 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash -300142804, now seen corresponding path program 1 times [2022-11-16 12:05:22,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:22,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354235938] [2022-11-16 12:05:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:22,240 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 [2022-11-16 12:05:22,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:22,241 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:22,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-16 12:05:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:22,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:05:22,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:22,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:22,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:22,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354235938] [2022-11-16 12:05:22,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354235938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:22,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:22,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:05:22,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251414802] [2022-11-16 12:05:22,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:22,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:22,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:22,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:22,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:22,452 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) [2022-11-16 12:05:22,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:22,622 INFO L93 Difference]: Finished difference Result 327 states and 849 transitions. [2022-11-16 12:05:22,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:22,623 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 [2022-11-16 12:05:22,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:22,627 INFO L225 Difference]: With dead ends: 327 [2022-11-16 12:05:22,628 INFO L226 Difference]: Without dead ends: 313 [2022-11-16 12:05:22,628 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 [2022-11-16 12:05:22,635 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 [2022-11-16 12:05:22,636 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] [2022-11-16 12:05:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-16 12:05:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-11-16 12:05:22,653 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) [2022-11-16 12:05:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 813 transitions. [2022-11-16 12:05:22,663 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 813 transitions. Word has length 8 [2022-11-16 12:05:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:22,664 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 813 transitions. [2022-11-16 12:05:22,665 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) [2022-11-16 12:05:22,665 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 813 transitions. [2022-11-16 12:05:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:05:22,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:22,666 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:22,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:22,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:22,879 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:22,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:22,879 INFO L85 PathProgramCache]: Analyzing trace with hash 136656152, now seen corresponding path program 1 times [2022-11-16 12:05:22,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:22,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962223795] [2022-11-16 12:05:22,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:22,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:22,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:22,881 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:22,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-16 12:05:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:23,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:05:23,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:23,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:05:23,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:23,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:23,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962223795] [2022-11-16 12:05:23,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962223795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:23,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:23,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:05:23,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696683627] [2022-11-16 12:05:23,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:23,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:23,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:23,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:23,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:23,057 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) [2022-11-16 12:05:23,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:23,283 INFO L93 Difference]: Finished difference Result 321 states and 813 transitions. [2022-11-16 12:05:23,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:23,288 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 [2022-11-16 12:05:23,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:23,289 INFO L225 Difference]: With dead ends: 321 [2022-11-16 12:05:23,289 INFO L226 Difference]: Without dead ends: 321 [2022-11-16 12:05:23,290 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 [2022-11-16 12:05:23,290 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 [2022-11-16 12:05:23,291 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] [2022-11-16 12:05:23,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-16 12:05:23,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 305. [2022-11-16 12:05:23,298 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) [2022-11-16 12:05:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 799 transitions. [2022-11-16 12:05:23,300 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 799 transitions. Word has length 9 [2022-11-16 12:05:23,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:23,301 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 799 transitions. [2022-11-16 12:05:23,301 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) [2022-11-16 12:05:23,301 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 799 transitions. [2022-11-16 12:05:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:05:23,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:23,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:23,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:23,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:23,516 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:23,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:23,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1903204094, now seen corresponding path program 1 times [2022-11-16 12:05:23,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:23,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115663597] [2022-11-16 12:05:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:23,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:23,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:23,518 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:23,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-16 12:05:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:23,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:05:23,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:23,804 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-16 12:05:23,804 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 [2022-11-16 12:05:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:24,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:24,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:24,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115663597] [2022-11-16 12:05:24,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115663597] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:24,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:05:24,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-16 12:05:24,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869037670] [2022-11-16 12:05:24,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:24,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:05:24,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:24,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:05:24,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:05:24,896 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) [2022-11-16 12:05:25,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:25,992 INFO L93 Difference]: Finished difference Result 325 states and 873 transitions. [2022-11-16 12:05:25,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:05:25,992 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 [2022-11-16 12:05:25,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:25,994 INFO L225 Difference]: With dead ends: 325 [2022-11-16 12:05:25,994 INFO L226 Difference]: Without dead ends: 325 [2022-11-16 12:05:25,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:05:25,995 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 [2022-11-16 12:05:25,995 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] [2022-11-16 12:05:25,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-11-16 12:05:26,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 315. [2022-11-16 12:05:26,002 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) [2022-11-16 12:05:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 836 transitions. [2022-11-16 12:05:26,003 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 836 transitions. Word has length 9 [2022-11-16 12:05:26,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:26,003 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 836 transitions. [2022-11-16 12:05:26,004 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) [2022-11-16 12:05:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 836 transitions. [2022-11-16 12:05:26,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:05:26,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:26,005 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:26,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:26,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:26,217 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:26,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:26,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1981291173, now seen corresponding path program 2 times [2022-11-16 12:05:26,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:26,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175269390] [2022-11-16 12:05:26,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:05:26,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:26,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:26,219 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:26,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-16 12:05:26,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:05:26,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:05:26,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:05:26,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:26,482 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-16 12:05:26,482 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 [2022-11-16 12:05:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:05:26,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:26,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:26,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175269390] [2022-11-16 12:05:26,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175269390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:26,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:26,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:05:26,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384114501] [2022-11-16 12:05:26,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:26,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:26,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:26,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:26,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:26,623 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) [2022-11-16 12:05:26,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:26,832 INFO L93 Difference]: Finished difference Result 219 states and 541 transitions. [2022-11-16 12:05:26,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:05:26,832 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 [2022-11-16 12:05:26,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:26,833 INFO L225 Difference]: With dead ends: 219 [2022-11-16 12:05:26,833 INFO L226 Difference]: Without dead ends: 219 [2022-11-16 12:05:26,833 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 [2022-11-16 12:05:26,834 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 [2022-11-16 12:05:26,835 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] [2022-11-16 12:05:26,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-11-16 12:05:26,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 173. [2022-11-16 12:05:26,840 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) [2022-11-16 12:05:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 414 transitions. [2022-11-16 12:05:26,841 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 414 transitions. Word has length 10 [2022-11-16 12:05:26,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:26,841 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 414 transitions. [2022-11-16 12:05:26,841 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) [2022-11-16 12:05:26,842 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 414 transitions. [2022-11-16 12:05:26,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:05:26,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:26,842 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-16 12:05:26,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-16 12:05:27,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:27,047 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:27,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:27,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1841665348, now seen corresponding path program 3 times [2022-11-16 12:05:27,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:27,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457948233] [2022-11-16 12:05:27,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:05:27,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:27,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:27,049 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:27,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-16 12:05:27,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 12:05:27,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:05:27,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:05:27,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:27,410 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-16 12:05:27,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-16 12:05:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:27,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:31,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:31,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457948233] [2022-11-16 12:05:31,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457948233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:31,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:05:31,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-16 12:05:31,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230262485] [2022-11-16 12:05:31,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:31,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:05:31,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:31,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:05:31,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:05:31,257 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) [2022-11-16 12:05:56,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:56,451 INFO L93 Difference]: Finished difference Result 2783 states and 6998 transitions. [2022-11-16 12:05:56,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:05:56,452 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 12:05:56,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:56,460 INFO L225 Difference]: With dead ends: 2783 [2022-11-16 12:05:56,461 INFO L226 Difference]: Without dead ends: 2783 [2022-11-16 12:05:56,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:05:56,462 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2980 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 2885 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s 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, 11.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:56,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2980 Valid, 371 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2885 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-11-16 12:05:56,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2022-11-16 12:05:56,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 185. [2022-11-16 12:05:56,499 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) [2022-11-16 12:05:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 438 transitions. [2022-11-16 12:05:56,500 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 438 transitions. Word has length 12 [2022-11-16 12:05:56,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:56,501 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 438 transitions. [2022-11-16 12:05:56,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 438 transitions. [2022-11-16 12:05:56,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:05:56,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:56,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:56,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:56,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:56,715 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:56,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:56,716 INFO L85 PathProgramCache]: Analyzing trace with hash 636365336, now seen corresponding path program 1 times [2022-11-16 12:05:56,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:56,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341998479] [2022-11-16 12:05:56,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:56,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:56,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:56,718 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:56,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-16 12:05:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:56,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:05:56,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:56,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:56,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:56,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341998479] [2022-11-16 12:05:56,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341998479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:56,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:56,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:05:56,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965247150] [2022-11-16 12:05:56,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:56,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:56,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:56,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:56,908 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) [2022-11-16 12:05:57,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:57,269 INFO L93 Difference]: Finished difference Result 209 states and 509 transitions. [2022-11-16 12:05:57,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:05:57,270 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 [2022-11-16 12:05:57,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:57,271 INFO L225 Difference]: With dead ends: 209 [2022-11-16 12:05:57,271 INFO L226 Difference]: Without dead ends: 140 [2022-11-16 12:05:57,271 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 [2022-11-16 12:05:57,272 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 [2022-11-16 12:05:57,272 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] [2022-11-16 12:05:57,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-16 12:05:57,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2022-11-16 12:05:57,275 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) [2022-11-16 12:05:57,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 322 transitions. [2022-11-16 12:05:57,276 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 322 transitions. Word has length 13 [2022-11-16 12:05:57,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:57,276 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 322 transitions. [2022-11-16 12:05:57,276 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) [2022-11-16 12:05:57,276 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 322 transitions. [2022-11-16 12:05:57,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:05:57,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:57,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:57,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:57,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:57,490 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:05:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:57,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2028533270, now seen corresponding path program 1 times [2022-11-16 12:05:57,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:57,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499074992] [2022-11-16 12:05:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:57,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:05:57,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:57,492 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:05:57,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-16 12:05:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:57,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:05:57,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:57,752 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 [2022-11-16 12:05:57,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:05:57,836 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:05:57,837 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 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-16 12:05:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:05:57,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:58,170 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 [2022-11-16 12:05:58,375 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:05:58,376 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 [2022-11-16 12:05:58,387 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 [2022-11-16 12:06:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:06:03,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:06:03,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499074992] [2022-11-16 12:06:03,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499074992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:06:03,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:06:03,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:06:03,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457531383] [2022-11-16 12:06:03,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:03,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:06:03,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:06:03,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:06:03,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:06:03,226 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) [2022-11-16 12:06:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:04,609 INFO L93 Difference]: Finished difference Result 254 states and 676 transitions. [2022-11-16 12:06:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:06:04,610 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 [2022-11-16 12:06:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:04,611 INFO L225 Difference]: With dead ends: 254 [2022-11-16 12:06:04,611 INFO L226 Difference]: Without dead ends: 254 [2022-11-16 12:06:04,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:06:04,612 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 157 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:04,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 3 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 219 Invalid, 0 Unknown, 163 Unchecked, 1.0s Time] [2022-11-16 12:06:04,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-16 12:06:04,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 172. [2022-11-16 12:06:04,617 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) [2022-11-16 12:06:04,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 431 transitions. [2022-11-16 12:06:04,618 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 431 transitions. Word has length 18 [2022-11-16 12:06:04,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:04,618 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 431 transitions. [2022-11-16 12:06:04,618 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) [2022-11-16 12:06:04,618 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 431 transitions. [2022-11-16 12:06:04,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:06:04,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:04,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:04,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:04,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:06:04,837 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:06:04,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:04,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1902070094, now seen corresponding path program 2 times [2022-11-16 12:06:04,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:06:04,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754900193] [2022-11-16 12:06:04,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:06:04,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:06:04,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:06:04,839 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:06:04,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-16 12:06:04,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:06:04,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:06:04,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:06:04,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:05,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:05,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:06:05,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754900193] [2022-11-16 12:06:05,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754900193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:05,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:05,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:05,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207614270] [2022-11-16 12:06:05,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:05,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:05,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:06:05,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:05,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:05,010 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) [2022-11-16 12:06:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:05,123 INFO L93 Difference]: Finished difference Result 169 states and 425 transitions. [2022-11-16 12:06:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:05,123 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 [2022-11-16 12:06:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:05,124 INFO L225 Difference]: With dead ends: 169 [2022-11-16 12:06:05,124 INFO L226 Difference]: Without dead ends: 169 [2022-11-16 12:06:05,124 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 [2022-11-16 12:06:05,125 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 [2022-11-16 12:06:05,125 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] [2022-11-16 12:06:05,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-16 12:06:05,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-16 12:06:05,129 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) [2022-11-16 12:06:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 425 transitions. [2022-11-16 12:06:05,130 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 425 transitions. Word has length 18 [2022-11-16 12:06:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:05,130 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 425 transitions. [2022-11-16 12:06:05,131 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) [2022-11-16 12:06:05,131 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 425 transitions. [2022-11-16 12:06:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:06:05,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:05,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:05,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:05,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:06:05,343 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:06:05,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1902070095, now seen corresponding path program 1 times [2022-11-16 12:06:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:06:05,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238662545] [2022-11-16 12:06:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:05,344 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:06:05,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:06:05,345 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:06:05,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-16 12:06:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:05,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:06:05,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:05,594 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 [2022-11-16 12:06:05,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:06:05,683 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:06:05,684 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 [2022-11-16 12:06:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:06:05,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:06,066 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 [2022-11-16 12:06:06,272 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:06:06,272 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 [2022-11-16 12:06:06,284 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 [2022-11-16 12:06:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:06:10,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:06:10,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238662545] [2022-11-16 12:06:10,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238662545] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:06:10,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:06:10,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:06:10,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540180598] [2022-11-16 12:06:10,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:10,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:06:10,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:06:10,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:06:10,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:06:10,754 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) [2022-11-16 12:06:12,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:12,032 INFO L93 Difference]: Finished difference Result 333 states and 895 transitions. [2022-11-16 12:06:12,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:06:12,032 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 [2022-11-16 12:06:12,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:12,033 INFO L225 Difference]: With dead ends: 333 [2022-11-16 12:06:12,033 INFO L226 Difference]: Without dead ends: 333 [2022-11-16 12:06:12,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:06:12,034 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 194 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:12,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 3 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 176 Invalid, 0 Unknown, 139 Unchecked, 0.9s Time] [2022-11-16 12:06:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-16 12:06:12,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 173. [2022-11-16 12:06:12,038 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) [2022-11-16 12:06:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 436 transitions. [2022-11-16 12:06:12,039 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 436 transitions. Word has length 18 [2022-11-16 12:06:12,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:12,039 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 436 transitions. [2022-11-16 12:06:12,040 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) [2022-11-16 12:06:12,040 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 436 transitions. [2022-11-16 12:06:12,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:06:12,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:12,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:12,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:12,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:06:12,254 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:06:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:12,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1663359905, now seen corresponding path program 2 times [2022-11-16 12:06:12,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:06:12,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149030559] [2022-11-16 12:06:12,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:06:12,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:06:12,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:06:12,257 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:06:12,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-16 12:06:12,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:06:12,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:06:12,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:06:12,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:12,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:12,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:06:12,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149030559] [2022-11-16 12:06:12,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149030559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:12,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:12,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:12,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234604492] [2022-11-16 12:06:12,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:12,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:06:12,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:06:12,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:06:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:06:12,491 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) [2022-11-16 12:06:12,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:12,610 INFO L93 Difference]: Finished difference Result 170 states and 430 transitions. [2022-11-16 12:06:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:12,611 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 [2022-11-16 12:06:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:12,611 INFO L225 Difference]: With dead ends: 170 [2022-11-16 12:06:12,612 INFO L226 Difference]: Without dead ends: 170 [2022-11-16 12:06:12,612 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 [2022-11-16 12:06:12,612 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 [2022-11-16 12:06:12,613 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] [2022-11-16 12:06:12,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-16 12:06:12,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-11-16 12:06:12,618 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) [2022-11-16 12:06:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 430 transitions. [2022-11-16 12:06:12,619 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 430 transitions. Word has length 18 [2022-11-16 12:06:12,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:12,619 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 430 transitions. [2022-11-16 12:06:12,619 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) [2022-11-16 12:06:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 430 transitions. [2022-11-16 12:06:12,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:06:12,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:12,621 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1] [2022-11-16 12:06:12,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-16 12:06:12,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:06:12,831 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:06:12,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:12,831 INFO L85 PathProgramCache]: Analyzing trace with hash -531174716, now seen corresponding path program 4 times [2022-11-16 12:06:12,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:06:12,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004941004] [2022-11-16 12:06:12,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:06:12,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:06:12,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:06:12,833 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:06:12,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-16 12:06:13,060 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:06:13,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:06:13,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:06:13,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:13,243 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-16 12:06:13,243 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 [2022-11-16 12:06:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:14,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:28,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:06:28,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004941004] [2022-11-16 12:06:28,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004941004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:06:28,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:06:28,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2022-11-16 12:06:28,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410433199] [2022-11-16 12:06:28,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:28,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 12:06:28,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:06:28,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 12:06:28,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 12:06:28,210 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) [2022-11-16 12:06:54,537 WARN L233 SmtUtils]: Spent 14.80s on a formula simplification that was a NOOP. DAG size: 254 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:07:11,528 WARN L233 SmtUtils]: Spent 15.05s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:07:30,258 WARN L233 SmtUtils]: Spent 16.77s on a formula simplification that was a NOOP. DAG size: 232 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:07:46,779 WARN L233 SmtUtils]: Spent 14.39s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:08:00,786 WARN L233 SmtUtils]: Spent 11.80s on a formula simplification that was a NOOP. DAG size: 211 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:08:11,902 WARN L233 SmtUtils]: Spent 8.98s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:08:25,787 WARN L233 SmtUtils]: Spent 11.76s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:08:34,563 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:08:42,606 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:09:36,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:36,123 INFO L93 Difference]: Finished difference Result 6574 states and 17330 transitions. [2022-11-16 12:09:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 12:09:36,125 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 [2022-11-16 12:09:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:36,140 INFO L225 Difference]: With dead ends: 6574 [2022-11-16 12:09:36,140 INFO L226 Difference]: Without dead ends: 6574 [2022-11-16 12:09:36,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 162.2s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-11-16 12:09:36,141 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 11902 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 10632 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s 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, 38.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:36,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11902 Valid, 1584 Invalid, 10678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 10632 Invalid, 0 Unknown, 0 Unchecked, 38.4s Time] [2022-11-16 12:09:36,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6574 states. [2022-11-16 12:09:36,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6574 to 194. [2022-11-16 12:09:36,202 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) [2022-11-16 12:09:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 478 transitions. [2022-11-16 12:09:36,203 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 478 transitions. Word has length 24 [2022-11-16 12:09:36,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:36,203 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 478 transitions. [2022-11-16 12:09:36,204 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) [2022-11-16 12:09:36,204 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 478 transitions. [2022-11-16 12:09:36,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:09:36,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:36,205 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] [2022-11-16 12:09:36,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:36,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:09:36,419 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:09:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1604046965, now seen corresponding path program 1 times [2022-11-16 12:09:36,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:36,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141106798] [2022-11-16 12:09:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:36,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:09:36,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:36,424 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:09:36,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-16 12:09:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:36,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:09:36,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:09:36,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:09:36,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:36,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141106798] [2022-11-16 12:09:36,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141106798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:36,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:09:36,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-11-16 12:09:36,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792624605] [2022-11-16 12:09:36,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:36,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:09:36,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:36,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:09:36,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:09:36,782 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) [2022-11-16 12:09:37,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:37,141 INFO L93 Difference]: Finished difference Result 191 states and 455 transitions. [2022-11-16 12:09:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:09:37,142 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 [2022-11-16 12:09:37,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:37,142 INFO L225 Difference]: With dead ends: 191 [2022-11-16 12:09:37,143 INFO L226 Difference]: Without dead ends: 191 [2022-11-16 12:09:37,143 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 [2022-11-16 12:09:37,143 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 [2022-11-16 12:09:37,144 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] [2022-11-16 12:09:37,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-16 12:09:37,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 179. [2022-11-16 12:09:37,147 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) [2022-11-16 12:09:37,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 426 transitions. [2022-11-16 12:09:37,148 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 426 transitions. Word has length 24 [2022-11-16 12:09:37,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:37,149 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 426 transitions. [2022-11-16 12:09:37,149 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) [2022-11-16 12:09:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 426 transitions. [2022-11-16 12:09:37,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:09:37,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:37,151 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] [2022-11-16 12:09:37,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:37,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:09:37,367 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:09:37,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:37,367 INFO L85 PathProgramCache]: Analyzing trace with hash -616953453, now seen corresponding path program 2 times [2022-11-16 12:09:37,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:37,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679391745] [2022-11-16 12:09:37,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:09:37,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:09:37,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:37,370 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:09:37,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-16 12:09:37,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:09:37,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:37,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:09:37,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:37,716 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 [2022-11-16 12:09:37,913 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 [2022-11-16 12:09:37,932 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 [2022-11-16 12:09:38,026 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 [2022-11-16 12:09:38,155 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:09:38,155 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 [2022-11-16 12:09:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:09:38,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:38,583 WARN L833 $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 [2022-11-16 12:09:38,630 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 [2022-11-16 12:09:38,913 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:09:38,914 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 [2022-11-16 12:09:38,930 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 [2022-11-16 12:09:38,946 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 [2022-11-16 12:09:38,964 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 [2022-11-16 12:09:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:09:47,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:47,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679391745] [2022-11-16 12:09:47,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679391745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:47,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:09:47,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-16 12:09:47,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047449885] [2022-11-16 12:09:47,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:47,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:09:47,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:09:47,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2022-11-16 12:09:47,832 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) [2022-11-16 12:09:49,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:49,845 INFO L93 Difference]: Finished difference Result 300 states and 739 transitions. [2022-11-16 12:09:49,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:09:49,846 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 [2022-11-16 12:09:49,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:49,847 INFO L225 Difference]: With dead ends: 300 [2022-11-16 12:09:49,847 INFO L226 Difference]: Without dead ends: 300 [2022-11-16 12:09:49,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=126, Invalid=429, Unknown=1, NotChecked=44, Total=600 [2022-11-16 12:09:49,848 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, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:49,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 20 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 310 Invalid, 0 Unknown, 216 Unchecked, 1.2s Time] [2022-11-16 12:09:49,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-16 12:09:49,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 193. [2022-11-16 12:09:49,853 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) [2022-11-16 12:09:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 469 transitions. [2022-11-16 12:09:49,854 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 469 transitions. Word has length 24 [2022-11-16 12:09:49,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:49,854 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 469 transitions. [2022-11-16 12:09:49,855 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) [2022-11-16 12:09:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 469 transitions. [2022-11-16 12:09:49,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:09:49,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:49,856 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] [2022-11-16 12:09:49,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:50,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:09:50,067 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:09:50,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2025813299, now seen corresponding path program 3 times [2022-11-16 12:09:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:50,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005403154] [2022-11-16 12:09:50,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:09:50,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:09:50,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:50,069 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:09:50,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-16 12:09:50,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:09:50,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:50,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:09:50,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:50,346 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 [2022-11-16 12:09:50,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:09:50,561 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 [2022-11-16 12:09:50,583 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 [2022-11-16 12:09:50,689 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 [2022-11-16 12:09:50,844 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:09:50,845 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 [2022-11-16 12:09:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:09:50,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:51,336 WARN L833 $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 [2022-11-16 12:09:51,368 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 [2022-11-16 12:09:51,371 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 [2022-11-16 12:09:53,302 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:09:53,302 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 [2022-11-16 12:09:53,335 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 [2022-11-16 12:09:53,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:09:53,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:09:53,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:09:53,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:09:53,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:09:53,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:09:53,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:09:53,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:09:53,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:09:53,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:09:53,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:09:53,401 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:09:53,482 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:09:53,482 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 [2022-11-16 12:10:00,818 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:10:00,818 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 [2022-11-16 12:10:00,839 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 [2022-11-16 12:10:00,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:00,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:00,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:00,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:00,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:00,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:00,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:00,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:00,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:00,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:00,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:00,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:00,971 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:10:00,971 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 [2022-11-16 12:10:25,356 WARN L233 SmtUtils]: Spent 9.82s on a formula simplification. DAG size of input: 761 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:10:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:25,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:10:25,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005403154] [2022-11-16 12:10:25,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005403154] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:25,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:10:25,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2022-11-16 12:10:25,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063283263] [2022-11-16 12:10:25,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:25,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:10:25,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:10:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:10:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=255, Unknown=2, NotChecked=32, Total=342 [2022-11-16 12:10:25,801 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) [2022-11-16 12:10:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:27,636 INFO L93 Difference]: Finished difference Result 260 states and 650 transitions. [2022-11-16 12:10:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:10:27,637 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 [2022-11-16 12:10:27,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:27,638 INFO L225 Difference]: With dead ends: 260 [2022-11-16 12:10:27,638 INFO L226 Difference]: Without dead ends: 260 [2022-11-16 12:10:27,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=134, Invalid=468, Unknown=2, NotChecked=46, Total=650 [2022-11-16 12:10:27,639 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 [2022-11-16 12:10:27,639 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] [2022-11-16 12:10:27,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-16 12:10:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 201. [2022-11-16 12:10:27,644 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) [2022-11-16 12:10:27,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 492 transitions. [2022-11-16 12:10:27,645 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 492 transitions. Word has length 24 [2022-11-16 12:10:27,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:27,645 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 492 transitions. [2022-11-16 12:10:27,645 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) [2022-11-16 12:10:27,645 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 492 transitions. [2022-11-16 12:10:27,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:10:27,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:27,646 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] [2022-11-16 12:10:27,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-16 12:10:27,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:10:27,846 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:10:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:27,847 INFO L85 PathProgramCache]: Analyzing trace with hash -56073165, now seen corresponding path program 4 times [2022-11-16 12:10:27,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:10:27,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462532368] [2022-11-16 12:10:27,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:10:27,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:10:27,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:10:27,848 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:10:27,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-16 12:10:28,063 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:10:28,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:28,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:10:28,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:28,084 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 [2022-11-16 12:10:28,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:10:28,360 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 [2022-11-16 12:10:28,380 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 [2022-11-16 12:10:28,490 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 [2022-11-16 12:10:28,656 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:10:28,657 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 [2022-11-16 12:10:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:28,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:29,166 WARN L833 $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 [2022-11-16 12:10:29,194 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 [2022-11-16 12:10:29,198 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 [2022-11-16 12:10:31,100 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:10:31,101 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 [2022-11-16 12:10:31,123 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 [2022-11-16 12:10:31,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:31,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:31,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:31,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:31,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:31,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:31,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:31,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:31,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:31,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:31,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:31,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:31,329 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:10:31,330 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 [2022-11-16 12:10:54,832 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:10:54,833 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 [2022-11-16 12:10:54,855 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 [2022-11-16 12:10:54,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:54,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:54,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:54,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:54,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:54,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:54,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:54,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:54,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:54,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:54,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:54,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:10:55,017 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:10:55,017 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 [2022-11-16 12:11:19,487 WARN L233 SmtUtils]: Spent 13.23s on a formula simplification. DAG size of input: 820 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:11:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:11:19,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:11:19,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462532368] [2022-11-16 12:11:19,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462532368] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:11:19,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:11:19,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-16 12:11:19,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099288261] [2022-11-16 12:11:19,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:11:19,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:11:19,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:11:19,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:11:19,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=285, Unknown=2, NotChecked=34, Total=380 [2022-11-16 12:11:19,997 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) [2022-11-16 12:11:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:11:21,625 INFO L93 Difference]: Finished difference Result 323 states and 814 transitions. [2022-11-16 12:11:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:11:21,627 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 [2022-11-16 12:11:21,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:11:21,628 INFO L225 Difference]: With dead ends: 323 [2022-11-16 12:11:21,628 INFO L226 Difference]: Without dead ends: 323 [2022-11-16 12:11:21,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=96, Invalid=368, Unknown=2, NotChecked=40, Total=506 [2022-11-16 12:11:21,628 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 122 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:11:21,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 36 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 192 Invalid, 0 Unknown, 155 Unchecked, 1.0s Time] [2022-11-16 12:11:21,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-16 12:11:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 230. [2022-11-16 12:11:21,634 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) [2022-11-16 12:11:21,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 566 transitions. [2022-11-16 12:11:21,635 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 566 transitions. Word has length 24 [2022-11-16 12:11:21,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:11:21,635 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 566 transitions. [2022-11-16 12:11:21,636 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) [2022-11-16 12:11:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 566 transitions. [2022-11-16 12:11:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:11:21,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:11:21,637 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] [2022-11-16 12:11:21,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-16 12:11:21,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:11:21,851 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:11:21,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:21,851 INFO L85 PathProgramCache]: Analyzing trace with hash 335378891, now seen corresponding path program 5 times [2022-11-16 12:11:21,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:11:21,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272805352] [2022-11-16 12:11:21,852 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:11:21,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:11:21,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:11:21,853 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:11:21,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-16 12:11:22,141 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:11:22,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:11:22,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 12:11:22,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:22,180 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 [2022-11-16 12:11:22,726 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 [2022-11-16 12:11:22,740 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 [2022-11-16 12:11:22,845 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 [2022-11-16 12:11:22,945 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:11:22,946 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 [2022-11-16 12:11:23,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:23,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:23,571 WARN L833 $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 [2022-11-16 12:11:23,619 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 [2022-11-16 12:11:23,990 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:11:23,991 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 [2022-11-16 12:11:24,013 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 [2022-11-16 12:11:24,034 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 [2022-11-16 12:11:24,056 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 [2022-11-16 12:11:37,580 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 379 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:11:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:40,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:11:40,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272805352] [2022-11-16 12:11:40,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272805352] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:11:40,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:11:40,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-16 12:11:40,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189222457] [2022-11-16 12:11:40,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:11:40,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:11:40,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:11:40,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:11:40,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=288, Unknown=1, NotChecked=34, Total=380 [2022-11-16 12:11:40,889 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) [2022-11-16 12:11:46,423 WARN L833 $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 [2022-11-16 12:11:47,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:11:47,189 INFO L93 Difference]: Finished difference Result 476 states and 1201 transitions. [2022-11-16 12:11:47,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:11:47,191 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 [2022-11-16 12:11:47,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:11:47,192 INFO L225 Difference]: With dead ends: 476 [2022-11-16 12:11:47,192 INFO L226 Difference]: Without dead ends: 476 [2022-11-16 12:11:47,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=167, Invalid=709, Unknown=2, NotChecked=114, Total=992 [2022-11-16 12:11:47,193 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 114 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:11:47,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 31 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 217 Invalid, 0 Unknown, 307 Unchecked, 1.0s Time] [2022-11-16 12:11:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-11-16 12:11:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 286. [2022-11-16 12:11:47,199 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) [2022-11-16 12:11:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 712 transitions. [2022-11-16 12:11:47,199 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 712 transitions. Word has length 24 [2022-11-16 12:11:47,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:11:47,200 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 712 transitions. [2022-11-16 12:11:47,200 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) [2022-11-16 12:11:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 712 transitions. [2022-11-16 12:11:47,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:11:47,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:11:47,201 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] [2022-11-16 12:11:47,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-16 12:11:47,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:11:47,402 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:11:47,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:47,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1184890649, now seen corresponding path program 6 times [2022-11-16 12:11:47,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:11:47,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014024903] [2022-11-16 12:11:47,403 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:11:47,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:11:47,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:11:47,404 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:11:47,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-16 12:11:47,704 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-16 12:11:47,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:11:47,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:11:47,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:47,741 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 [2022-11-16 12:11:47,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:11:48,083 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 [2022-11-16 12:11:48,109 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 [2022-11-16 12:11:48,242 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 [2022-11-16 12:11:48,388 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:11:48,388 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 [2022-11-16 12:11:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:11:48,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:48,994 WARN L833 $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 [2022-11-16 12:11:49,027 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 [2022-11-16 12:11:49,033 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 [2022-11-16 12:11:51,118 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:11:51,118 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 [2022-11-16 12:11:51,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:51,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:51,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:51,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:51,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:51,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:51,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:51,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:51,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:51,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:51,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:51,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:51,301 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:11:51,302 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 [2022-11-16 12:11:51,326 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 [2022-11-16 12:11:57,638 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:11:57,638 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 [2022-11-16 12:11:57,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:57,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:57,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:57,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:57,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:57,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:57,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:57,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:57,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:57,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:57,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:57,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:11:57,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:11:57,830 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 [2022-11-16 12:11:57,853 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 [2022-11-16 12:12:19,695 WARN L233 SmtUtils]: Spent 12.60s on a formula simplification. DAG size of input: 559 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:12:20,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:12:20,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:12:20,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014024903] [2022-11-16 12:12:20,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014024903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:12:20,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:12:20,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-16 12:12:20,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298145509] [2022-11-16 12:12:20,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:12:20,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:12:20,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:12:20,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:12:20,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=285, Unknown=2, NotChecked=34, Total=380 [2022-11-16 12:12:20,176 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) [2022-11-16 12:12:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:23,637 INFO L93 Difference]: Finished difference Result 483 states and 1202 transitions. [2022-11-16 12:12:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:12:23,639 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 [2022-11-16 12:12:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:23,640 INFO L225 Difference]: With dead ends: 483 [2022-11-16 12:12:23,640 INFO L226 Difference]: Without dead ends: 483 [2022-11-16 12:12:23,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=167, Invalid=591, Unknown=2, NotChecked=52, Total=812 [2022-11-16 12:12:23,641 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 109 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:23,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 17 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 327 Invalid, 0 Unknown, 215 Unchecked, 1.7s Time] [2022-11-16 12:12:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-16 12:12:23,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 295. [2022-11-16 12:12:23,647 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) [2022-11-16 12:12:23,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 741 transitions. [2022-11-16 12:12:23,647 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 741 transitions. Word has length 24 [2022-11-16 12:12:23,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:23,648 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 741 transitions. [2022-11-16 12:12:23,648 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) [2022-11-16 12:12:23,648 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 741 transitions. [2022-11-16 12:12:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:12:23,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:23,649 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] [2022-11-16 12:12:23,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-16 12:12:23,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:12:23,850 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:12:23,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:23,850 INFO L85 PathProgramCache]: Analyzing trace with hash -677988217, now seen corresponding path program 7 times [2022-11-16 12:12:23,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:12:23,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978226954] [2022-11-16 12:12:23,851 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:12:23,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:12:23,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:12:23,852 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:12:23,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-16 12:12:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:12:24,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:24,103 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 [2022-11-16 12:12:24,354 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 [2022-11-16 12:12:24,379 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 [2022-11-16 12:12:24,546 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 [2022-11-16 12:12:24,730 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:12:24,731 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 [2022-11-16 12:12:24,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:12:24,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:25,306 WARN L833 $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 [2022-11-16 12:12:25,361 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 [2022-11-16 12:12:25,699 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:12:25,699 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 [2022-11-16 12:12:25,718 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 [2022-11-16 12:12:25,734 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 [2022-11-16 12:12:25,752 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 [2022-11-16 12:12:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:12:35,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:12:35,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978226954] [2022-11-16 12:12:35,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978226954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:12:35,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:12:35,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-16 12:12:35,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350116772] [2022-11-16 12:12:35,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:12:35,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:12:35,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:12:35,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:12:35,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2022-11-16 12:12:35,015 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) [2022-11-16 12:12:36,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:36,480 INFO L93 Difference]: Finished difference Result 481 states and 1246 transitions. [2022-11-16 12:12:36,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:12:36,481 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 [2022-11-16 12:12:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:36,482 INFO L225 Difference]: With dead ends: 481 [2022-11-16 12:12:36,482 INFO L226 Difference]: Without dead ends: 461 [2022-11-16 12:12:36,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=112, Invalid=443, Unknown=1, NotChecked=44, Total=600 [2022-11-16 12:12:36,483 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 [2022-11-16 12:12:36,483 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] [2022-11-16 12:12:36,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-16 12:12:36,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 272. [2022-11-16 12:12:36,488 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) [2022-11-16 12:12:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 680 transitions. [2022-11-16 12:12:36,488 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 680 transitions. Word has length 24 [2022-11-16 12:12:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:36,489 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 680 transitions. [2022-11-16 12:12:36,489 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) [2022-11-16 12:12:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 680 transitions. [2022-11-16 12:12:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:12:36,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:36,490 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] [2022-11-16 12:12:36,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:36,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:12:36,695 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:12:36,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:36,695 INFO L85 PathProgramCache]: Analyzing trace with hash -117107929, now seen corresponding path program 8 times [2022-11-16 12:12:36,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:12:36,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718438832] [2022-11-16 12:12:36,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:12:36,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:12:36,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:12:36,697 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:12:36,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-16 12:12:36,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:12:36,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:12:37,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:12:37,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:37,020 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 [2022-11-16 12:12:37,252 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 [2022-11-16 12:12:37,276 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 [2022-11-16 12:12:37,454 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 [2022-11-16 12:12:37,642 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:12:37,642 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 [2022-11-16 12:12:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:12:37,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:38,575 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 [2022-11-16 12:12:38,907 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:12:38,907 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 [2022-11-16 12:12:38,929 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 [2022-11-16 12:12:38,946 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 [2022-11-16 12:12:38,970 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 [2022-11-16 12:12:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:12:48,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:12:48,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718438832] [2022-11-16 12:12:48,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718438832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:12:48,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:12:48,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-16 12:12:48,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184378498] [2022-11-16 12:12:48,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:12:48,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:12:48,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:12:48,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:12:48,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=253, Unknown=3, NotChecked=0, Total=306 [2022-11-16 12:12:48,154 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) [2022-11-16 12:12:50,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:50,182 INFO L93 Difference]: Finished difference Result 394 states and 1035 transitions. [2022-11-16 12:12:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:12:50,184 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 [2022-11-16 12:12:50,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:50,184 INFO L225 Difference]: With dead ends: 394 [2022-11-16 12:12:50,185 INFO L226 Difference]: Without dead ends: 394 [2022-11-16 12:12:50,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=128, Invalid=469, Unknown=3, NotChecked=0, Total=600 [2022-11-16 12:12:50,186 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 106 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:50,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 9 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 281 Invalid, 0 Unknown, 190 Unchecked, 1.4s Time] [2022-11-16 12:12:50,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-16 12:12:50,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 271. [2022-11-16 12:12:50,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 269 states have (on average 2.54275092936803) internal successors, (684), 270 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:50,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 684 transitions. [2022-11-16 12:12:50,193 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 684 transitions. Word has length 24 [2022-11-16 12:12:50,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:50,193 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 684 transitions. [2022-11-16 12:12:50,194 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) [2022-11-16 12:12:50,194 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 684 transitions. [2022-11-16 12:12:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:12:50,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:50,195 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] [2022-11-16 12:12:50,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-16 12:12:50,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:12:50,395 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:12:50,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:50,396 INFO L85 PathProgramCache]: Analyzing trace with hash -473724105, now seen corresponding path program 9 times [2022-11-16 12:12:50,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:12:50,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087526829] [2022-11-16 12:12:50,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:12:50,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:12:50,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:12:50,397 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:12:50,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-16 12:12:50,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:12:50,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:12:50,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:12:50,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:50,648 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 152 treesize of output 144 [2022-11-16 12:12:50,860 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 [2022-11-16 12:12:50,886 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 [2022-11-16 12:12:51,019 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 [2022-11-16 12:12:51,200 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:12:51,201 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 [2022-11-16 12:12:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:12:51,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:52,060 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 [2022-11-16 12:12:52,400 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:12:52,400 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 [2022-11-16 12:12:52,418 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 [2022-11-16 12:12:52,434 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 [2022-11-16 12:12:52,450 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 [2022-11-16 12:13:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:13:01,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:01,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087526829] [2022-11-16 12:13:01,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087526829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:01,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:13:01,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-16 12:13:01,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110743286] [2022-11-16 12:13:01,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:01,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:13:01,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:01,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:13:01,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=251, Unknown=5, NotChecked=0, Total=306 [2022-11-16 12:13:01,857 INFO L87 Difference]: Start difference. First operand 271 states and 684 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) [2022-11-16 12:13:04,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:04,178 INFO L93 Difference]: Finished difference Result 389 states and 1025 transitions. [2022-11-16 12:13:04,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:13:04,180 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 [2022-11-16 12:13:04,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:04,181 INFO L225 Difference]: With dead ends: 389 [2022-11-16 12:13:04,182 INFO L226 Difference]: Without dead ends: 389 [2022-11-16 12:13:04,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=159, Invalid=592, Unknown=5, NotChecked=0, Total=756 [2022-11-16 12:13:04,183 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 168 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:04,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 11 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 222 Invalid, 0 Unknown, 205 Unchecked, 1.3s Time] [2022-11-16 12:13:04,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-16 12:13:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 273. [2022-11-16 12:13:04,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 271 states have (on average 2.5498154981549814) internal successors, (691), 272 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 691 transitions. [2022-11-16 12:13:04,191 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 691 transitions. Word has length 24 [2022-11-16 12:13:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:04,191 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 691 transitions. [2022-11-16 12:13:04,191 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) [2022-11-16 12:13:04,192 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 691 transitions. [2022-11-16 12:13:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:13:04,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:04,192 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] [2022-11-16 12:13:04,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-16 12:13:04,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:04,393 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:13:04,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:04,393 INFO L85 PathProgramCache]: Analyzing trace with hash -185794503, now seen corresponding path program 10 times [2022-11-16 12:13:04,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:04,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785862751] [2022-11-16 12:13:04,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:13:04,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:04,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:04,396 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:04,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-16 12:13:04,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:13:04,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:13:04,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:13:04,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:04,719 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 [2022-11-16 12:13:04,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:13:04,974 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 [2022-11-16 12:13:05,000 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 [2022-11-16 12:13:05,127 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 [2022-11-16 12:13:05,316 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:05,317 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 [2022-11-16 12:13:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:13:05,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:05,887 WARN L833 $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 [2022-11-16 12:13:05,918 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 [2022-11-16 12:13:05,922 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 [2022-11-16 12:13:08,142 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:13:08,142 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 [2022-11-16 12:13:08,166 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 [2022-11-16 12:13:08,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:08,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:08,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:08,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:08,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:08,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:08,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:08,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:08,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:08,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:08,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:08,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:08,329 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:08,330 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 [2022-11-16 12:13:27,858 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:13:27,858 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 [2022-11-16 12:13:27,885 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 [2022-11-16 12:13:27,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:27,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:27,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:27,923 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:27,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:27,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:27,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:27,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:27,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:27,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:27,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:27,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:28,050 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:28,051 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 [2022-11-16 12:14:07,898 WARN L233 SmtUtils]: Spent 22.91s on a formula simplification. DAG size of input: 754 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:14:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:14:08,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:08,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785862751] [2022-11-16 12:14:08,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785862751] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:08,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:08,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2022-11-16 12:14:08,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486602751] [2022-11-16 12:14:08,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:08,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:14:08,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:08,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:14:08,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=255, Unknown=2, NotChecked=32, Total=342 [2022-11-16 12:14:08,387 INFO L87 Difference]: Start difference. First operand 273 states and 691 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) [2022-11-16 12:14:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:10,168 INFO L93 Difference]: Finished difference Result 466 states and 1223 transitions. [2022-11-16 12:14:10,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:14:10,170 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 [2022-11-16 12:14:10,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:10,171 INFO L225 Difference]: With dead ends: 466 [2022-11-16 12:14:10,171 INFO L226 Difference]: Without dead ends: 466 [2022-11-16 12:14:10,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=100, Invalid=408, Unknown=2, NotChecked=42, Total=552 [2022-11-16 12:14:10,172 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 119 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:10,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 42 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 173 Invalid, 0 Unknown, 204 Unchecked, 0.9s Time] [2022-11-16 12:14:10,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-11-16 12:14:10,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 309. [2022-11-16 12:14:10,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 307 states have (on average 2.583061889250814) internal successors, (793), 308 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 793 transitions. [2022-11-16 12:14:10,181 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 793 transitions. Word has length 24 [2022-11-16 12:14:10,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:10,181 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 793 transitions. [2022-11-16 12:14:10,182 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) [2022-11-16 12:14:10,182 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 793 transitions. [2022-11-16 12:14:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:14:10,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:10,183 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] [2022-11-16 12:14:10,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-16 12:14:10,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:10,387 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:14:10,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:10,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1096690275, now seen corresponding path program 11 times [2022-11-16 12:14:10,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:10,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208035282] [2022-11-16 12:14:10,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:14:10,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:10,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:10,389 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:10,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-16 12:14:10,682 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:14:10,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:10,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:14:10,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:10,896 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 [2022-11-16 12:14:10,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:14:11,006 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:11,006 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 [2022-11-16 12:14:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:14:11,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:11,492 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 [2022-11-16 12:14:11,773 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:14:11,774 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 [2022-11-16 12:14:11,787 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 [2022-11-16 12:14:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:14:20,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:20,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208035282] [2022-11-16 12:14:20,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208035282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:20,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:20,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-16 12:14:20,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047125016] [2022-11-16 12:14:20,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:20,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:14:20,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:20,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:14:20,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:14:20,598 INFO L87 Difference]: Start difference. First operand 309 states and 793 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) [2022-11-16 12:14:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:21,937 INFO L93 Difference]: Finished difference Result 439 states and 1157 transitions. [2022-11-16 12:14:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:14:21,938 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 [2022-11-16 12:14:21,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:21,939 INFO L225 Difference]: With dead ends: 439 [2022-11-16 12:14:21,939 INFO L226 Difference]: Without dead ends: 439 [2022-11-16 12:14:21,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:14:21,940 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 146 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:21,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 8 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 155 Unchecked, 0.9s Time] [2022-11-16 12:14:21,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-16 12:14:21,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 350. [2022-11-16 12:14:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 348 states have (on average 2.6149425287356323) internal successors, (910), 349 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 910 transitions. [2022-11-16 12:14:21,949 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 910 transitions. Word has length 24 [2022-11-16 12:14:21,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:21,950 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 910 transitions. [2022-11-16 12:14:21,950 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) [2022-11-16 12:14:21,950 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 910 transitions. [2022-11-16 12:14:21,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:14:21,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:21,951 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] [2022-11-16 12:14:21,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:22,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:22,152 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:14:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash -886731835, now seen corresponding path program 12 times [2022-11-16 12:14:22,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:22,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099109454] [2022-11-16 12:14:22,153 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:14:22,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:22,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:22,154 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:22,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-16 12:14:22,390 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-16 12:14:22,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:22,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:14:22,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:22,566 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 [2022-11-16 12:14:22,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:14:22,683 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:22,684 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 [2022-11-16 12:14:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:14:22,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:23,200 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 [2022-11-16 12:14:23,489 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:14:23,489 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 [2022-11-16 12:14:23,504 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 [2022-11-16 12:14:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:14:28,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:28,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099109454] [2022-11-16 12:14:28,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099109454] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:28,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:28,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:14:28,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812021517] [2022-11-16 12:14:28,917 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:28,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:14:28,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:28,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:14:28,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:14:28,918 INFO L87 Difference]: Start difference. First operand 350 states and 910 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) [2022-11-16 12:14:30,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:30,233 INFO L93 Difference]: Finished difference Result 554 states and 1472 transitions. [2022-11-16 12:14:30,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:14:30,234 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 [2022-11-16 12:14:30,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:30,235 INFO L225 Difference]: With dead ends: 554 [2022-11-16 12:14:30,235 INFO L226 Difference]: Without dead ends: 554 [2022-11-16 12:14:30,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:14:30,236 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:30,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 230 Invalid, 0 Unknown, 150 Unchecked, 0.9s Time] [2022-11-16 12:14:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-11-16 12:14:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 365. [2022-11-16 12:14:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 363 states have (on average 2.6391184573002753) internal successors, (958), 364 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:30,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 958 transitions. [2022-11-16 12:14:30,247 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 958 transitions. Word has length 24 [2022-11-16 12:14:30,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:30,247 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 958 transitions. [2022-11-16 12:14:30,247 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) [2022-11-16 12:14:30,247 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 958 transitions. [2022-11-16 12:14:30,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 12:14:30,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:30,249 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] [2022-11-16 12:14:30,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-16 12:14:30,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:30,455 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:14:30,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:30,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1668209459, now seen corresponding path program 13 times [2022-11-16 12:14:30,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:30,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65060630] [2022-11-16 12:14:30,456 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:14:30,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:30,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:30,457 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:30,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-16 12:14:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:30,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:14:30,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:30,783 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 [2022-11-16 12:14:30,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:14:30,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:30,891 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 [2022-11-16 12:14:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:14:31,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:31,296 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 [2022-11-16 12:14:31,561 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:14:31,561 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 [2022-11-16 12:14:31,574 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 [2022-11-16 12:14:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:14:37,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:37,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65060630] [2022-11-16 12:14:37,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65060630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:37,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:37,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:14:37,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910172505] [2022-11-16 12:14:37,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:37,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:14:37,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:37,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:14:37,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:14:37,744 INFO L87 Difference]: Start difference. First operand 365 states and 958 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 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) [2022-11-16 12:14:39,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:39,374 INFO L93 Difference]: Finished difference Result 516 states and 1374 transitions. [2022-11-16 12:14:39,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:14:39,375 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 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 25 [2022-11-16 12:14:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:39,377 INFO L225 Difference]: With dead ends: 516 [2022-11-16 12:14:39,377 INFO L226 Difference]: Without dead ends: 516 [2022-11-16 12:14:39,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:14:39,378 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 176 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:39,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 4 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 148 Invalid, 0 Unknown, 115 Unchecked, 1.1s Time] [2022-11-16 12:14:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-11-16 12:14:39,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 376. [2022-11-16 12:14:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 374 states have (on average 2.6470588235294117) internal successors, (990), 375 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:39,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 990 transitions. [2022-11-16 12:14:39,390 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 990 transitions. Word has length 25 [2022-11-16 12:14:39,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:39,391 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 990 transitions. [2022-11-16 12:14:39,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 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) [2022-11-16 12:14:39,391 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 990 transitions. [2022-11-16 12:14:39,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 12:14:39,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:39,392 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] [2022-11-16 12:14:39,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:39,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:39,608 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:14:39,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:39,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1878167899, now seen corresponding path program 14 times [2022-11-16 12:14:39,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:39,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294121015] [2022-11-16 12:14:39,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:14:39,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:39,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:39,610 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:39,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-16 12:14:39,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:14:39,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:39,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:14:39,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:40,017 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 [2022-11-16 12:14:40,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:14:40,143 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:40,143 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 [2022-11-16 12:14:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:14:40,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:40,655 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 166 treesize of output 162 [2022-11-16 12:14:40,967 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:14:40,967 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 [2022-11-16 12:14:40,981 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 [2022-11-16 12:14:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:14:46,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:46,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294121015] [2022-11-16 12:14:46,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294121015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:46,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:46,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:14:46,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345657287] [2022-11-16 12:14:46,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:46,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:14:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:46,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:14:46,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:14:46,894 INFO L87 Difference]: Start difference. First operand 376 states and 990 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) [2022-11-16 12:14:49,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:49,083 INFO L93 Difference]: Finished difference Result 579 states and 1574 transitions. [2022-11-16 12:14:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:14:49,084 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 [2022-11-16 12:14:49,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:49,085 INFO L225 Difference]: With dead ends: 579 [2022-11-16 12:14:49,085 INFO L226 Difference]: Without dead ends: 579 [2022-11-16 12:14:49,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-16 12:14:49,086 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 121 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:49,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 0 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 216 Invalid, 0 Unknown, 117 Unchecked, 1.3s Time] [2022-11-16 12:14:49,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-11-16 12:14:49,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 390. [2022-11-16 12:14:49,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 388 states have (on average 2.6391752577319587) internal successors, (1024), 389 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1024 transitions. [2022-11-16 12:14:49,100 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1024 transitions. Word has length 25 [2022-11-16 12:14:49,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:49,100 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 1024 transitions. [2022-11-16 12:14:49,100 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) [2022-11-16 12:14:49,101 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1024 transitions. [2022-11-16 12:14:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 12:14:49,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:49,102 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] [2022-11-16 12:14:49,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:49,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:49,307 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:14:49,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:49,307 INFO L85 PathProgramCache]: Analyzing trace with hash -738408763, now seen corresponding path program 15 times [2022-11-16 12:14:49,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:49,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794948130] [2022-11-16 12:14:49,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:14:49,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:49,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:49,309 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:49,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-16 12:14:49,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:14:49,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:49,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:14:49,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:49,871 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-16 12:14:49,872 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 [2022-11-16 12:14:49,962 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 [2022-11-16 12:14:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:50,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:51,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:51,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794948130] [2022-11-16 12:14:51,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794948130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:51,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:51,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-16 12:14:51,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179064032] [2022-11-16 12:14:51,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:51,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:14:51,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:51,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:14:51,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:14:51,141 INFO L87 Difference]: Start difference. First operand 390 states and 1024 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 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) [2022-11-16 12:14:52,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:52,363 INFO L93 Difference]: Finished difference Result 842 states and 2038 transitions. [2022-11-16 12:14:52,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:14:52,364 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 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 26 [2022-11-16 12:14:52,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:52,365 INFO L225 Difference]: With dead ends: 842 [2022-11-16 12:14:52,365 INFO L226 Difference]: Without dead ends: 538 [2022-11-16 12:14:52,365 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 [2022-11-16 12:14:52,366 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 120 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:52,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 40 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 12:14:52,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-16 12:14:52,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 501. [2022-11-16 12:14:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 499 states have (on average 2.4809619238476954) internal successors, (1238), 500 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 1238 transitions. [2022-11-16 12:14:52,376 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 1238 transitions. Word has length 26 [2022-11-16 12:14:52,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:52,376 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 1238 transitions. [2022-11-16 12:14:52,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 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) [2022-11-16 12:14:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 1238 transitions. [2022-11-16 12:14:52,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 12:14:52,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:52,378 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] [2022-11-16 12:14:52,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:52,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:52,591 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:14:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1486814590, now seen corresponding path program 16 times [2022-11-16 12:14:52,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:52,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582844310] [2022-11-16 12:14:52,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:14:52,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:52,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:52,593 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:52,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-16 12:14:52,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:14:52,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:52,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:14:52,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:52,983 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 [2022-11-16 12:14:52,995 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 [2022-11-16 12:14:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:14:53,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:53,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:53,311 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 [2022-11-16 12:14:53,323 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 [2022-11-16 12:14:53,333 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 [2022-11-16 12:14:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:14:54,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:54,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582844310] [2022-11-16 12:14:54,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582844310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:54,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:54,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2022-11-16 12:14:54,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644807329] [2022-11-16 12:14:54,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:54,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:14:54,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:14:54,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:14:54,398 INFO L87 Difference]: Start difference. First operand 501 states and 1238 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) [2022-11-16 12:14:55,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:55,061 INFO L93 Difference]: Finished difference Result 431 states and 1059 transitions. [2022-11-16 12:14:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:14:55,062 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 [2022-11-16 12:14:55,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:55,063 INFO L225 Difference]: With dead ends: 431 [2022-11-16 12:14:55,063 INFO L226 Difference]: Without dead ends: 357 [2022-11-16 12:14:55,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:14:55,064 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 66 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:55,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 28 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 48 Unchecked, 0.5s Time] [2022-11-16 12:14:55,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-11-16 12:14:55,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2022-11-16 12:14:55,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 355 states have (on average 2.6422535211267606) internal successors, (938), 356 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 938 transitions. [2022-11-16 12:14:55,072 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 938 transitions. Word has length 26 [2022-11-16 12:14:55,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:55,072 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 938 transitions. [2022-11-16 12:14:55,072 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) [2022-11-16 12:14:55,072 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 938 transitions. [2022-11-16 12:14:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:14:55,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:55,074 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] [2022-11-16 12:14:55,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Ended with exit code 0 [2022-11-16 12:14:55,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:55,287 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:14:55,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:55,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1350299383, now seen corresponding path program 17 times [2022-11-16 12:14:55,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:55,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406426143] [2022-11-16 12:14:55,288 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:14:55,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:55,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:55,289 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:55,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-16 12:14:55,551 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-16 12:14:55,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:55,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:14:55,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:14:55,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:14:55,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:55,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406426143] [2022-11-16 12:14:55,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406426143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:55,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:55,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:14:55,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050003238] [2022-11-16 12:14:55,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:55,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:14:55,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:55,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:14:55,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:14:55,646 INFO L87 Difference]: Start difference. First operand 357 states and 938 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:56,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:56,295 INFO L93 Difference]: Finished difference Result 456 states and 1182 transitions. [2022-11-16 12:14:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:14:56,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2022-11-16 12:14:56,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:56,297 INFO L225 Difference]: With dead ends: 456 [2022-11-16 12:14:56,297 INFO L226 Difference]: Without dead ends: 359 [2022-11-16 12:14:56,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:14:56,298 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:56,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 0 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:14:56,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-16 12:14:56,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 291. [2022-11-16 12:14:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 289 states have (on average 2.4844290657439445) internal successors, (718), 290 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 718 transitions. [2022-11-16 12:14:56,308 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 718 transitions. Word has length 27 [2022-11-16 12:14:56,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:56,308 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 718 transitions. [2022-11-16 12:14:56,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:56,309 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 718 transitions. [2022-11-16 12:14:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:14:56,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:56,310 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] [2022-11-16 12:14:56,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:56,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:56,519 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:14:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:56,519 INFO L85 PathProgramCache]: Analyzing trace with hash 193907947, now seen corresponding path program 18 times [2022-11-16 12:14:56,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:56,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352208893] [2022-11-16 12:14:56,520 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:14:56,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:56,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:56,521 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:56,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-16 12:14:56,844 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-16 12:14:56,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:56,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 12:14:56,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:57,084 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-16 12:14:57,084 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 [2022-11-16 12:14:57,638 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 [2022-11-16 12:14:57,675 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:57,675 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 25 [2022-11-16 12:14:57,697 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 [2022-11-16 12:14:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:58,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:58,361 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:58,362 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 [2022-11-16 12:14:58,375 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 [2022-11-16 12:15:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:07,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:15:07,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352208893] [2022-11-16 12:15:07,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352208893] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:07,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:07,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2022-11-16 12:15:07,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7361960] [2022-11-16 12:15:07,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:07,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:15:07,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:15:07,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:15:07,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:15:07,590 INFO L87 Difference]: Start difference. First operand 291 states and 718 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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) [2022-11-16 12:15:09,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:09,967 INFO L93 Difference]: Finished difference Result 978 states and 2383 transitions. [2022-11-16 12:15:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:15:09,969 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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 [2022-11-16 12:15:09,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:09,971 INFO L225 Difference]: With dead ends: 978 [2022-11-16 12:15:09,972 INFO L226 Difference]: Without dead ends: 975 [2022-11-16 12:15:09,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:15:09,972 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 98 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 243 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:09,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 64 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 187 Invalid, 0 Unknown, 243 Unchecked, 1.0s Time] [2022-11-16 12:15:09,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-11-16 12:15:09,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 611. [2022-11-16 12:15:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 609 states have (on average 2.6469622331691296) internal successors, (1612), 610 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:09,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1612 transitions. [2022-11-16 12:15:09,992 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1612 transitions. Word has length 27 [2022-11-16 12:15:09,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:09,992 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 1612 transitions. [2022-11-16 12:15:09,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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) [2022-11-16 12:15:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1612 transitions. [2022-11-16 12:15:09,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:15:09,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:09,995 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] [2022-11-16 12:15:10,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:10,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:15:10,212 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:15:10,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:10,213 INFO L85 PathProgramCache]: Analyzing trace with hash 650749067, now seen corresponding path program 19 times [2022-11-16 12:15:10,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:15:10,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012665529] [2022-11-16 12:15:10,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:15:10,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:15:10,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:15:10,215 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:15:10,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-16 12:15:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:10,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:15:10,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:11,037 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 [2022-11-16 12:15:11,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:15:11,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:11,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:11,802 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:11,803 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 [2022-11-16 12:15:11,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 184 [2022-11-16 12:15:11,833 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 [2022-11-16 12:15:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:13,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:15:13,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012665529] [2022-11-16 12:15:13,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012665529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:13,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:13,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2022-11-16 12:15:13,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899809066] [2022-11-16 12:15:13,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:13,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:15:13,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:15:13,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:15:13,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:15:13,178 INFO L87 Difference]: Start difference. First operand 611 states and 1612 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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) [2022-11-16 12:15:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:16,061 INFO L93 Difference]: Finished difference Result 1380 states and 3381 transitions. [2022-11-16 12:15:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:15:16,063 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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 [2022-11-16 12:15:16,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:16,066 INFO L225 Difference]: With dead ends: 1380 [2022-11-16 12:15:16,066 INFO L226 Difference]: Without dead ends: 1336 [2022-11-16 12:15:16,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:15:16,067 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 206 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:16,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 56 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 12:15:16,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2022-11-16 12:15:16,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 739. [2022-11-16 12:15:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 737 states have (on average 2.5848032564450474) internal successors, (1905), 738 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1905 transitions. [2022-11-16 12:15:16,094 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1905 transitions. Word has length 27 [2022-11-16 12:15:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:16,095 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 1905 transitions. [2022-11-16 12:15:16,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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) [2022-11-16 12:15:16,095 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1905 transitions. [2022-11-16 12:15:16,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:15:16,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:16,098 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] [2022-11-16 12:15:16,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:16,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:15:16,311 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:15:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:16,312 INFO L85 PathProgramCache]: Analyzing trace with hash 601893556, now seen corresponding path program 20 times [2022-11-16 12:15:16,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:15:16,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104939601] [2022-11-16 12:15:16,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:15:16,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:15:16,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:15:16,314 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:15:16,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-16 12:15:16,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:15:16,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:15:16,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:15:16,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:16,717 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 18 treesize of output 16 [2022-11-16 12:15:16,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:15:17,124 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 [2022-11-16 12:15:17,151 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 [2022-11-16 12:15:17,413 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 [2022-11-16 12:15:17,571 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:17,572 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 [2022-11-16 12:15:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:15:17,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:18,244 WARN L833 $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_1901 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1901) 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_1901 (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_1901) 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 [2022-11-16 12:15:18,344 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 [2022-11-16 12:15:18,349 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 [2022-11-16 12:15:20,847 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:15:20,848 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 [2022-11-16 12:15:20,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:20,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:20,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:20,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:20,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:20,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:20,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:20,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:20,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:20,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:20,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:20,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:21,054 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:21,055 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 [2022-11-16 12:15:21,078 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 [2022-11-16 12:15:46,356 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:15:46,356 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 [2022-11-16 12:15:46,382 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 [2022-11-16 12:15:46,401 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:46,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:46,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:46,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:46,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:46,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:46,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:46,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:46,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:46,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:46,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:46,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:46,560 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:46,561 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 [2022-11-16 12:16:09,186 WARN L233 SmtUtils]: Spent 12.46s on a formula simplification. DAG size of input: 711 DAG size of output: 41 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:16:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-11-16 12:16:09,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:09,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104939601] [2022-11-16 12:16:09,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104939601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:16:09,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:16:09,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-16 12:16:09,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340412921] [2022-11-16 12:16:09,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:16:09,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:16:09,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:09,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:16:09,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=285, Unknown=2, NotChecked=34, Total=380 [2022-11-16 12:16:09,737 INFO L87 Difference]: Start difference. First operand 739 states and 1905 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 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) [2022-11-16 12:16:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:12,323 INFO L93 Difference]: Finished difference Result 1033 states and 2653 transitions. [2022-11-16 12:16:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:16:12,325 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 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 27 [2022-11-16 12:16:12,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:12,327 INFO L225 Difference]: With dead ends: 1033 [2022-11-16 12:16:12,327 INFO L226 Difference]: Without dead ends: 1029 [2022-11-16 12:16:12,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=155, Invalid=549, Unknown=2, NotChecked=50, Total=756 [2022-11-16 12:16:12,328 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 88 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:12,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 9 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 188 Invalid, 0 Unknown, 206 Unchecked, 0.9s Time] [2022-11-16 12:16:12,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-11-16 12:16:12,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 782. [2022-11-16 12:16:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 780 states have (on average 2.612820512820513) internal successors, (2038), 781 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:12,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 2038 transitions. [2022-11-16 12:16:12,345 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 2038 transitions. Word has length 27 [2022-11-16 12:16:12,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:12,345 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 2038 transitions. [2022-11-16 12:16:12,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 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) [2022-11-16 12:16:12,346 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 2038 transitions. [2022-11-16 12:16:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:16:12,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:12,347 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] [2022-11-16 12:16:12,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-11-16 12:16:12,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:12,548 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:16:12,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:12,549 INFO L85 PathProgramCache]: Analyzing trace with hash -806966290, now seen corresponding path program 21 times [2022-11-16 12:16:12,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:12,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711061707] [2022-11-16 12:16:12,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:16:12,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:12,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:12,550 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:12,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-16 12:16:12,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:16:12,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:16:12,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:16:12,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:12,971 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 18 treesize of output 16 [2022-11-16 12:16:13,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:16:13,361 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 [2022-11-16 12:16:13,385 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 [2022-11-16 12:16:13,609 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 [2022-11-16 12:16:13,765 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:13,765 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 [2022-11-16 12:16:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:16:13,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:14,472 WARN L833 $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_1950 (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_1950) 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_1950 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1950) 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 [2022-11-16 12:16:14,571 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 [2022-11-16 12:16:14,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 158 [2022-11-16 12:16:17,111 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:16:17,112 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 [2022-11-16 12:16:17,146 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 [2022-11-16 12:16:17,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:17,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:17,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:17,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:17,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:17,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:17,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:17,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:17,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:17,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:17,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:17,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:17,325 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:17,326 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 [2022-11-16 12:16:33,545 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:16:33,545 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 [2022-11-16 12:16:33,570 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 [2022-11-16 12:16:33,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:33,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:33,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:33,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:33,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:33,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:33,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:33,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:33,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:33,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:33,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:33,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:33,725 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:33,726 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 [2022-11-16 12:17:17,932 WARN L233 SmtUtils]: Spent 18.99s on a formula simplification. DAG size of input: 936 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:17:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-11-16 12:17:18,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:17:18,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711061707] [2022-11-16 12:17:18,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711061707] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:17:18,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:17:18,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-16 12:17:18,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972649943] [2022-11-16 12:17:18,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:17:18,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:17:18,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:17:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:17:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=285, Unknown=2, NotChecked=34, Total=380 [2022-11-16 12:17:18,442 INFO L87 Difference]: Start difference. First operand 782 states and 2038 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 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) [2022-11-16 12:17:22,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:22,732 INFO L93 Difference]: Finished difference Result 1164 states and 2980 transitions. [2022-11-16 12:17:22,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:17:22,734 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 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 [2022-11-16 12:17:22,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:22,735 INFO L225 Difference]: With dead ends: 1164 [2022-11-16 12:17:22,735 INFO L226 Difference]: Without dead ends: 1142 [2022-11-16 12:17:22,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=148, Invalid=610, Unknown=2, NotChecked=52, Total=812 [2022-11-16 12:17:22,736 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 80 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 281 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:22,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 54 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 376 Invalid, 0 Unknown, 281 Unchecked, 1.9s Time] [2022-11-16 12:17:22,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-11-16 12:17:22,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 849. [2022-11-16 12:17:22,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 2.61629279811098) internal successors, (2216), 848 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2216 transitions. [2022-11-16 12:17:22,752 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2216 transitions. Word has length 27 [2022-11-16 12:17:22,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:22,752 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 2216 transitions. [2022-11-16 12:17:22,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 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) [2022-11-16 12:17:22,752 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2216 transitions. [2022-11-16 12:17:22,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:17:22,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:22,755 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] [2022-11-16 12:17:22,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:22,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:17:22,969 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:17:22,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:22,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1401355236, now seen corresponding path program 22 times [2022-11-16 12:17:22,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:17:22,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491628045] [2022-11-16 12:17:22,970 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:17:22,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:17:22,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:17:22,971 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:17:22,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-16 12:17:23,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:17:23,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:17:23,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:17:23,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:23,289 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 [2022-11-16 12:17:23,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:17:23,664 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 [2022-11-16 12:17:23,690 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 [2022-11-16 12:17:23,867 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 [2022-11-16 12:17:24,058 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:17:24,058 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 [2022-11-16 12:17:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:17:24,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:24,653 WARN L833 $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_1997 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1997) 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_1997 (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_1997) 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 [2022-11-16 12:17:24,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 162 [2022-11-16 12:17:24,712 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 [2022-11-16 12:17:26,566 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:17:26,566 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 [2022-11-16 12:17:26,588 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 [2022-11-16 12:17:26,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:26,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:26,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:26,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:26,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:26,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:26,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:26,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:26,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:26,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:26,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:26,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:26,759 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:17:26,759 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 [2022-11-16 12:17:39,771 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:17:39,772 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 [2022-11-16 12:17:39,797 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 [2022-11-16 12:17:39,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:39,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:39,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:39,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:39,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:39,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:39,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:39,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:39,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:39,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:39,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:39,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:39,974 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:17:39,974 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 [2022-11-16 12:18:14,299 WARN L233 SmtUtils]: Spent 13.52s on a formula simplification. DAG size of input: 816 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:18:14,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-11-16 12:18:14,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:18:14,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491628045] [2022-11-16 12:18:14,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491628045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:18:14,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:18:14,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-16 12:18:14,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884982404] [2022-11-16 12:18:14,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:18:14,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:18:14,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:18:14,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:18:14,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=285, Unknown=2, NotChecked=34, Total=380 [2022-11-16 12:18:14,929 INFO L87 Difference]: Start difference. First operand 849 states and 2216 transitions. Second operand has 20 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:17,890 INFO L93 Difference]: Finished difference Result 1136 states and 2929 transitions. [2022-11-16 12:18:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:18:17,890 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 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 [2022-11-16 12:18:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:17,892 INFO L225 Difference]: With dead ends: 1136 [2022-11-16 12:18:17,892 INFO L226 Difference]: Without dead ends: 1128 [2022-11-16 12:18:17,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=142, Invalid=616, Unknown=2, NotChecked=52, Total=812 [2022-11-16 12:18:17,893 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 87 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:17,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 42 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 224 Invalid, 0 Unknown, 171 Unchecked, 0.9s Time] [2022-11-16 12:18:17,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-11-16 12:18:17,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 895. [2022-11-16 12:18:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 893 states have (on average 2.6282194848824187) internal successors, (2347), 894 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:17,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2347 transitions. [2022-11-16 12:18:17,914 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 2347 transitions. Word has length 27 [2022-11-16 12:18:17,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:17,914 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 2347 transitions. [2022-11-16 12:18:17,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:17,914 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 2347 transitions. [2022-11-16 12:18:17,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:18:17,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:17,923 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] [2022-11-16 12:18:17,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-16 12:18:18,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:18,124 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:18:18,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash -701138426, now seen corresponding path program 23 times [2022-11-16 12:18:18,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:18:18,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100096524] [2022-11-16 12:18:18,125 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:18:18,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:18,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:18:18,126 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:18:18,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-16 12:18:18,500 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-16 12:18:18,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:18:18,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:18:18,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:18,529 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 250 treesize of output 242 [2022-11-16 12:18:18,812 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 [2022-11-16 12:18:18,840 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 [2022-11-16 12:18:19,020 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 [2022-11-16 12:18:19,204 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:18:19,205 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 [2022-11-16 12:18:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:18:19,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:18:19,859 WARN L833 $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_2040 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2040) 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_2040 (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_2040) 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 [2022-11-16 12:18:19,925 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 [2022-11-16 12:18:20,343 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:18:20,344 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 [2022-11-16 12:18:20,363 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 [2022-11-16 12:18:20,382 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 [2022-11-16 12:18:20,402 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 [2022-11-16 12:18:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:18:29,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:18:29,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100096524] [2022-11-16 12:18:29,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100096524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:18:29,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:18:29,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-16 12:18:29,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037406850] [2022-11-16 12:18:29,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:18:29,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:18:29,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:18:29,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:18:29,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2022-11-16 12:18:29,131 INFO L87 Difference]: Start difference. First operand 895 states and 2347 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:31,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:31,728 INFO L93 Difference]: Finished difference Result 1140 states and 2982 transitions. [2022-11-16 12:18:31,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:18:31,730 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 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 [2022-11-16 12:18:31,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:31,732 INFO L225 Difference]: With dead ends: 1140 [2022-11-16 12:18:31,732 INFO L226 Difference]: Without dead ends: 1140 [2022-11-16 12:18:31,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=126, Invalid=429, Unknown=1, NotChecked=44, Total=600 [2022-11-16 12:18:31,732 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 62 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:31,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 18 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 252 Invalid, 0 Unknown, 160 Unchecked, 1.4s Time] [2022-11-16 12:18:31,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-11-16 12:18:31,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 921. [2022-11-16 12:18:31,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 919 states have (on average 2.633297062023939) internal successors, (2420), 920 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 2420 transitions. [2022-11-16 12:18:31,751 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 2420 transitions. Word has length 27 [2022-11-16 12:18:31,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:31,752 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 2420 transitions. [2022-11-16 12:18:31,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 2420 transitions. [2022-11-16 12:18:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:18:31,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:31,755 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] [2022-11-16 12:18:31,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-16 12:18:31,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:31,972 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 12:18:31,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:31,972 INFO L85 PathProgramCache]: Analyzing trace with hash -7504610, now seen corresponding path program 24 times [2022-11-16 12:18:31,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:18:31,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875564521] [2022-11-16 12:18:31,973 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:18:31,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:31,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:18:31,975 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:18:32,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38daa72-5f6f-41b9-aa97-bce0013c4c97/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-16 12:18:32,492 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-16 12:18:32,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:18:32,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:18:32,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:32,537 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 [2022-11-16 12:18:32,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:18:33,028 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 [2022-11-16 12:18:33,062 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 [2022-11-16 12:18:33,331 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 [2022-11-16 12:18:33,568 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:18:33,569 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 [2022-11-16 12:18:33,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:18:33,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:18:34,393 WARN L833 $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_2089 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2089) 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_2089 (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_2089) 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 [2022-11-16 12:18:34,471 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 [2022-11-16 12:18:34,476 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 [2022-11-16 12:18:36,960 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:18:36,960 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 [2022-11-16 12:18:37,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:37,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:37,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:37,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:37,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:37,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:37,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:37,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:37,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:37,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:37,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:37,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:37,214 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:18:37,215 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 [2022-11-16 12:18:37,256 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 [2022-11-16 12:18:43,100 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-16 12:18:43,100 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 [2022-11-16 12:18:43,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:43,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:43,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:43,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:43,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:43,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:43,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:43,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:43,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:43,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:43,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:43,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:43,351 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:18:43,352 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 [2022-11-16 12:18:43,379 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