./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:32:19,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:32:19,581 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 21:32:19,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:32:19,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:32:19,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:32:19,610 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:32:19,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:32:19,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:32:19,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:32:19,612 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:32:19,613 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:32:19,613 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:32:19,614 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:32:19,614 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:32:19,615 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:32:19,616 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:32:19,616 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:32:19,617 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:32:19,617 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:32:19,618 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:32:19,619 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:32:19,619 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:32:19,620 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:32:19,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:32:19,621 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:32:19,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:32:19,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:32:19,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:32:19,623 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:32:19,623 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:32:19,623 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:32:19,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:32:19,624 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:32:19,625 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:32:19,625 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:32:19,625 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:32:19,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:32:19,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:32:19,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:32:19,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:19,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:32:19,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:32:19,629 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:32:19,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:32:19,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:32:19,630 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:32:19,630 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:32:19,630 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed [2023-11-23 21:32:19,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:32:19,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:32:19,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:32:19,955 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:32:19,956 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:32:19,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2023-11-23 21:32:22,945 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:32:23,336 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:32:23,337 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2023-11-23 21:32:23,372 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/data/c6d15370e/c71804b369774e79961730a32f11ec5d/FLAG0a8f5547b [2023-11-23 21:32:23,391 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/data/c6d15370e/c71804b369774e79961730a32f11ec5d [2023-11-23 21:32:23,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:32:23,399 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:32:23,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:23,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:32:23,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:32:23,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:23" (1/1) ... [2023-11-23 21:32:23,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488b9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23, skipping insertion in model container [2023-11-23 21:32:23,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:23" (1/1) ... [2023-11-23 21:32:23,504 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:24,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:24,208 ERROR L324 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) [2023-11-23 21:32:24,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@77ee6692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24, skipping insertion in model container [2023-11-23 21:32:24,209 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:24,209 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:32:24,211 INFO L158 Benchmark]: Toolchain (without parser) took 810.98ms. Allocated memory is still 169.9MB. Free memory was 135.5MB in the beginning and 130.8MB in the end (delta: 4.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:32:24,212 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory was 95.2MB in the beginning and 95.1MB in the end (delta: 70.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:32:24,213 INFO L158 Benchmark]: CACSL2BoogieTranslator took 805.74ms. Allocated memory is still 169.9MB. Free memory was 135.5MB in the beginning and 130.8MB in the end (delta: 4.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:32:24,214 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory was 95.2MB in the beginning and 95.1MB in the end (delta: 70.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 805.74ms. Allocated memory is still 169.9MB. Free memory was 135.5MB in the beginning and 130.8MB in the end (delta: 4.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:32:26,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:32:26,744 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-23 21:32:26,753 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:32:26,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:32:26,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:32:26,815 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:32:26,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:32:26,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:32:26,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:32:26,822 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:32:26,823 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:32:26,824 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:32:26,826 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:32:26,826 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:32:26,827 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:32:26,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:32:26,829 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:32:26,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:32:26,831 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:32:26,832 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:32:26,833 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:32:26,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:32:26,834 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:32:26,834 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:32:26,835 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:32:26,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:32:26,836 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:32:26,837 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:32:26,837 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:32:26,839 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:32:26,839 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:32:26,840 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:32:26,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:32:26,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:32:26,841 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:32:26,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:32:26,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:26,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:32:26,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:32:26,843 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:32:26,844 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:32:26,844 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:32:26,845 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:32:26,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:32:26,846 INFO L153 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_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed [2023-11-23 21:32:27,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:32:27,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:32:27,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:32:27,327 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:32:27,327 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:32:27,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2023-11-23 21:32:30,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:32:30,853 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:32:30,854 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2023-11-23 21:32:30,884 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/data/4acf811be/746e807accd641b3afa17dbc22f4e3ad/FLAG465065230 [2023-11-23 21:32:30,904 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/data/4acf811be/746e807accd641b3afa17dbc22f4e3ad [2023-11-23 21:32:30,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:32:30,912 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:32:30,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:30,916 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:32:30,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:32:30,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:30" (1/1) ... [2023-11-23 21:32:30,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569e59c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:30, skipping insertion in model container [2023-11-23 21:32:30,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:30" (1/1) ... [2023-11-23 21:32:31,014 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:31,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:31,860 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:32:31,876 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:31,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:32,000 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:32:32,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:32,193 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:32:32,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:32 WrapperNode [2023-11-23 21:32:32,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:32,195 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:32,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:32:32,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:32:32,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:32" (1/1) ... [2023-11-23 21:32:32,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:32" (1/1) ... [2023-11-23 21:32:32,347 INFO L138 Inliner]: procedures = 180, calls = 238, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 801 [2023-11-23 21:32:32,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:32,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:32:32,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:32:32,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:32:32,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:32" (1/1) ... [2023-11-23 21:32:32,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:32" (1/1) ... [2023-11-23 21:32:32,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:32" (1/1) ... [2023-11-23 21:32:32,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:32" (1/1) ... [2023-11-23 21:32:32,437 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:32" (1/1) ... [2023-11-23 21:32:32,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:32" (1/1) ... [2023-11-23 21:32:32,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:32" (1/1) ... [2023-11-23 21:32:32,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:32" (1/1) ... [2023-11-23 21:32:32,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:32:32,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:32:32,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:32:32,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:32:32,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:32" (1/1) ... [2023-11-23 21:32:32,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:32,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:32:32,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:32:32,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:32:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-23 21:32:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:32:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:32:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:32:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:32:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:32:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:32:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:32:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:32:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:32:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:32:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:32:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:32:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:32:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:32:32,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:32:32,804 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:32:32,807 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:32:32,812 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-23 21:32:36,958 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:32:37,163 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:32:37,164 INFO L309 CfgBuilder]: Removed 40 assume(true) statements. [2023-11-23 21:32:37,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:37 BoogieIcfgContainer [2023-11-23 21:32:37,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:32:37,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:32:37,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:32:37,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:32:37,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:32:30" (1/3) ... [2023-11-23 21:32:37,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7370fcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:37, skipping insertion in model container [2023-11-23 21:32:37,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:32" (2/3) ... [2023-11-23 21:32:37,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7370fcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:37, skipping insertion in model container [2023-11-23 21:32:37,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:37" (3/3) ... [2023-11-23 21:32:37,179 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test1-2.i [2023-11-23 21:32:37,199 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:32:37,200 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 435 error locations. [2023-11-23 21:32:37,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:32:37,286 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;@626002f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:32:37,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 435 error locations. [2023-11-23 21:32:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 790 states, 342 states have (on average 2.5350877192982457) internal successors, (867), 784 states have internal predecessors, (867), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:32:37,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:32:37,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:37,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:32:37,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:32:37,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:37,310 INFO L85 PathProgramCache]: Analyzing trace with hash 42739262, now seen corresponding path program 1 times [2023-11-23 21:32:37,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:37,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397471849] [2023-11-23 21:32:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:37,325 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 [2023-11-23 21:32:37,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:37,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:32:37,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:37,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:32:37,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:37,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:37,538 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:37,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397471849] [2023-11-23 21:32:37,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397471849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:37,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:37,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:32:37,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403631197] [2023-11-23 21:32:37,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:37,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:32:37,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:37,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:32:37,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:32:37,596 INFO L87 Difference]: Start difference. First operand has 790 states, 342 states have (on average 2.5350877192982457) internal successors, (867), 784 states have internal predecessors, (867), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 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) [2023-11-23 21:32:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:38,294 INFO L93 Difference]: Finished difference Result 780 states and 837 transitions. [2023-11-23 21:32:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:32:38,298 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 [2023-11-23 21:32:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:38,321 INFO L225 Difference]: With dead ends: 780 [2023-11-23 21:32:38,322 INFO L226 Difference]: Without dead ends: 779 [2023-11-23 21:32:38,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:32:38,328 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:38,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 753 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:32:38,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-11-23 21:32:38,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 779. [2023-11-23 21:32:38,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 337 states have (on average 2.4035608308605343) internal successors, (810), 773 states have internal predecessors, (810), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:32:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 836 transitions. [2023-11-23 21:32:38,412 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 836 transitions. Word has length 4 [2023-11-23 21:32:38,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:38,412 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 836 transitions. [2023-11-23 21:32:38,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2023-11-23 21:32:38,413 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 836 transitions. [2023-11-23 21:32:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:32:38,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:38,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:32:38,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:38,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:38,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:32:38,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:38,617 INFO L85 PathProgramCache]: Analyzing trace with hash 42739324, now seen corresponding path program 1 times [2023-11-23 21:32:38,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:38,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433019135] [2023-11-23 21:32:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:38,618 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 [2023-11-23 21:32:38,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:38,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:32:38,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:38,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:32:38,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:38,838 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:32:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:38,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:38,864 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:38,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433019135] [2023-11-23 21:32:38,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433019135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:38,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:38,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:32:38,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992351772] [2023-11-23 21:32:38,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:38,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:38,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:38,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:38,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:38,875 INFO L87 Difference]: Start difference. First operand 779 states and 836 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2023-11-23 21:32:40,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:40,832 INFO L93 Difference]: Finished difference Result 740 states and 798 transitions. [2023-11-23 21:32:40,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:40,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 [2023-11-23 21:32:40,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:40,839 INFO L225 Difference]: With dead ends: 740 [2023-11-23 21:32:40,839 INFO L226 Difference]: Without dead ends: 740 [2023-11-23 21:32:40,839 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 [2023-11-23 21:32:40,841 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 536 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:40,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 550 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 21:32:40,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2023-11-23 21:32:40,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 730. [2023-11-23 21:32:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 337 states have (on average 2.258160237388724) internal successors, (761), 724 states have internal predecessors, (761), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:32:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 787 transitions. [2023-11-23 21:32:40,872 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 787 transitions. Word has length 4 [2023-11-23 21:32:40,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:40,872 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 787 transitions. [2023-11-23 21:32:40,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2023-11-23 21:32:40,872 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 787 transitions. [2023-11-23 21:32:40,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:32:40,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:40,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:32:40,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:41,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:41,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:32:41,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash 42739325, now seen corresponding path program 1 times [2023-11-23 21:32:41,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:41,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934738510] [2023-11-23 21:32:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:41,083 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 [2023-11-23 21:32:41,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:41,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:32:41,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:41,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:32:41,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:41,197 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:32:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:41,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:41,224 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:41,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934738510] [2023-11-23 21:32:41,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934738510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:41,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:41,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:32:41,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013681980] [2023-11-23 21:32:41,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:41,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:41,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:41,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:41,226 INFO L87 Difference]: Start difference. First operand 730 states and 787 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2023-11-23 21:32:43,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:43,679 INFO L93 Difference]: Finished difference Result 790 states and 851 transitions. [2023-11-23 21:32:43,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:43,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 [2023-11-23 21:32:43,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:43,686 INFO L225 Difference]: With dead ends: 790 [2023-11-23 21:32:43,687 INFO L226 Difference]: Without dead ends: 790 [2023-11-23 21:32:43,687 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 [2023-11-23 21:32:43,688 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 230 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:43,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 874 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 21:32:43,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2023-11-23 21:32:43,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 743. [2023-11-23 21:32:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 360 states have (on average 2.2444444444444445) internal successors, (808), 737 states have internal predecessors, (808), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:32:43,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 834 transitions. [2023-11-23 21:32:43,713 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 834 transitions. Word has length 4 [2023-11-23 21:32:43,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:43,713 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 834 transitions. [2023-11-23 21:32:43,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2023-11-23 21:32:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 834 transitions. [2023-11-23 21:32:43,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:32:43,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:43,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:32:43,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:43,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:43,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:32:43,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:43,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1325741435, now seen corresponding path program 1 times [2023-11-23 21:32:43,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:43,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611746527] [2023-11-23 21:32:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:43,918 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 [2023-11-23 21:32:43,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:43,920 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:32:43,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:44,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:32:44,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:44,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:44,030 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611746527] [2023-11-23 21:32:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611746527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:44,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:44,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:32:44,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148667105] [2023-11-23 21:32:44,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:44,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:44,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:44,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:44,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:44,033 INFO L87 Difference]: Start difference. First operand 743 states and 834 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) 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) [2023-11-23 21:32:45,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:45,093 INFO L93 Difference]: Finished difference Result 1259 states and 1410 transitions. [2023-11-23 21:32:45,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:45,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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 [2023-11-23 21:32:45,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:45,102 INFO L225 Difference]: With dead ends: 1259 [2023-11-23 21:32:45,103 INFO L226 Difference]: Without dead ends: 1259 [2023-11-23 21:32:45,103 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 [2023-11-23 21:32:45,104 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 512 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:45,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 1379 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:32:45,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-11-23 21:32:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 744. [2023-11-23 21:32:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 361 states have (on average 2.2409972299168976) internal successors, (809), 738 states have internal predecessors, (809), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:32:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 835 transitions. [2023-11-23 21:32:45,133 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 835 transitions. Word has length 5 [2023-11-23 21:32:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:45,134 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 835 transitions. [2023-11-23 21:32:45,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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) [2023-11-23 21:32:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 835 transitions. [2023-11-23 21:32:45,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:32:45,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:45,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:45,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:45,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:45,345 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:32:45,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:45,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1267581594, now seen corresponding path program 1 times [2023-11-23 21:32:45,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:45,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019663155] [2023-11-23 21:32:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:45,346 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 [2023-11-23 21:32:45,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:45,347 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:32:45,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:45,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:32:45,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:45,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:45,503 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:45,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019663155] [2023-11-23 21:32:45,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019663155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:45,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:45,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:45,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940915975] [2023-11-23 21:32:45,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:45,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:45,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:45,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:45,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:45,505 INFO L87 Difference]: Start difference. First operand 744 states and 835 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-11-23 21:32:46,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:46,264 INFO L93 Difference]: Finished difference Result 705 states and 795 transitions. [2023-11-23 21:32:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:46,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 10 [2023-11-23 21:32:46,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:46,272 INFO L225 Difference]: With dead ends: 705 [2023-11-23 21:32:46,272 INFO L226 Difference]: Without dead ends: 705 [2023-11-23 21:32:46,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:46,274 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 70 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:46,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1241 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:32:46,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2023-11-23 21:32:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 705. [2023-11-23 21:32:46,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 346 states have (on average 2.222543352601156) internal successors, (769), 699 states have internal predecessors, (769), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:32:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 795 transitions. [2023-11-23 21:32:46,295 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 795 transitions. Word has length 10 [2023-11-23 21:32:46,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:46,295 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 795 transitions. [2023-11-23 21:32:46,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-11-23 21:32:46,296 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 795 transitions. [2023-11-23 21:32:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:32:46,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:46,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:46,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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)] Ended with exit code 0 [2023-11-23 21:32:46,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:46,500 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:32:46,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:46,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1624796064, now seen corresponding path program 1 times [2023-11-23 21:32:46,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:46,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748141747] [2023-11-23 21:32:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:46,501 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 [2023-11-23 21:32:46,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:46,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:32:46,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:46,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:32:46,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:46,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:46,690 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:46,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748141747] [2023-11-23 21:32:46,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748141747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:46,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:46,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:32:46,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223467991] [2023-11-23 21:32:46,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:46,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:32:46,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:46,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:32:46,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:32:46,692 INFO L87 Difference]: Start difference. First operand 705 states and 795 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-11-23 21:32:47,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:47,718 INFO L93 Difference]: Finished difference Result 691 states and 774 transitions. [2023-11-23 21:32:47,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:32:47,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 12 [2023-11-23 21:32:47,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:47,724 INFO L225 Difference]: With dead ends: 691 [2023-11-23 21:32:47,725 INFO L226 Difference]: Without dead ends: 691 [2023-11-23 21:32:47,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:47,726 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 58 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:47,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1818 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:32:47,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-11-23 21:32:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 690. [2023-11-23 21:32:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 345 states have (on average 2.1652173913043478) internal successors, (747), 684 states have internal predecessors, (747), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:32:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 773 transitions. [2023-11-23 21:32:47,747 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 773 transitions. Word has length 12 [2023-11-23 21:32:47,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:47,748 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 773 transitions. [2023-11-23 21:32:47,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-11-23 21:32:47,748 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 773 transitions. [2023-11-23 21:32:47,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:32:47,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:47,749 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, 1, 1] [2023-11-23 21:32:47,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-23 21:32:47,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:47,952 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:32:47,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:47,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1359441198, now seen corresponding path program 1 times [2023-11-23 21:32:47,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:47,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846857952] [2023-11-23 21:32:47,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:47,954 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 [2023-11-23 21:32:47,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:47,955 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:32:47,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:48,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:32:48,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:48,112 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:32:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:48,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:48,225 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:48,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846857952] [2023-11-23 21:32:48,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846857952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:48,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:48,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:48,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415305801] [2023-11-23 21:32:48,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:48,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:32:48,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:48,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:32:48,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:32:48,227 INFO L87 Difference]: Start difference. First operand 690 states and 773 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 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) [2023-11-23 21:32:50,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:50,520 INFO L93 Difference]: Finished difference Result 696 states and 780 transitions. [2023-11-23 21:32:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:32:50,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 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 26 [2023-11-23 21:32:50,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:50,526 INFO L225 Difference]: With dead ends: 696 [2023-11-23 21:32:50,526 INFO L226 Difference]: Without dead ends: 696 [2023-11-23 21:32:50,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:50,528 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 471 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:50,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 777 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-23 21:32:50,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-11-23 21:32:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 686. [2023-11-23 21:32:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 345 states have (on average 2.1536231884057973) internal successors, (743), 680 states have internal predecessors, (743), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:32:50,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 769 transitions. [2023-11-23 21:32:50,549 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 769 transitions. Word has length 26 [2023-11-23 21:32:50,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:50,550 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 769 transitions. [2023-11-23 21:32:50,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 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) [2023-11-23 21:32:50,550 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 769 transitions. [2023-11-23 21:32:50,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:32:50,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:50,551 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, 1, 1] [2023-11-23 21:32:50,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:50,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:50,755 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:32:50,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:50,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1359441199, now seen corresponding path program 1 times [2023-11-23 21:32:50,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:50,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020818141] [2023-11-23 21:32:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:50,757 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 [2023-11-23 21:32:50,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:50,758 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:32:50,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:50,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:32:50,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:50,938 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:32:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:51,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:51,161 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:51,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020818141] [2023-11-23 21:32:51,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020818141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:51,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:51,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:51,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463550513] [2023-11-23 21:32:51,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:51,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:32:51,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:32:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:32:51,164 INFO L87 Difference]: Start difference. First operand 686 states and 769 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 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) [2023-11-23 21:32:54,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:54,074 INFO L93 Difference]: Finished difference Result 729 states and 782 transitions. [2023-11-23 21:32:54,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:32:54,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 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 26 [2023-11-23 21:32:54,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:54,079 INFO L225 Difference]: With dead ends: 729 [2023-11-23 21:32:54,079 INFO L226 Difference]: Without dead ends: 729 [2023-11-23 21:32:54,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:54,080 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 167 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:54,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 1137 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-23 21:32:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2023-11-23 21:32:54,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 682. [2023-11-23 21:32:54,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 345 states have (on average 2.1420289855072463) internal successors, (739), 676 states have internal predecessors, (739), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:32:54,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 765 transitions. [2023-11-23 21:32:54,100 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 765 transitions. Word has length 26 [2023-11-23 21:32:54,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:54,100 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 765 transitions. [2023-11-23 21:32:54,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 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) [2023-11-23 21:32:54,100 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 765 transitions. [2023-11-23 21:32:54,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 21:32:54,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:54,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:54,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-23 21:32:54,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:54,305 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:32:54,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:54,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1104618920, now seen corresponding path program 1 times [2023-11-23 21:32:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:54,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054547118] [2023-11-23 21:32:54,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:54,306 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 [2023-11-23 21:32:54,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:54,308 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:32:54,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:54,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:32:54,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:54,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:54,604 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:54,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054547118] [2023-11-23 21:32:54,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054547118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:54,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:54,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:32:54,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763452949] [2023-11-23 21:32:54,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:54,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:32:54,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:54,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:32:54,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:32:54,606 INFO L87 Difference]: Start difference. First operand 682 states and 765 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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) [2023-11-23 21:32:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:55,641 INFO L93 Difference]: Finished difference Result 676 states and 755 transitions. [2023-11-23 21:32:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:32:55,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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 42 [2023-11-23 21:32:55,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:55,647 INFO L225 Difference]: With dead ends: 676 [2023-11-23 21:32:55,648 INFO L226 Difference]: Without dead ends: 676 [2023-11-23 21:32:55,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:55,650 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 23 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:55,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1804 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:32:55,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-11-23 21:32:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2023-11-23 21:32:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 339 states have (on average 2.150442477876106) internal successors, (729), 670 states have internal predecessors, (729), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:32:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 755 transitions. [2023-11-23 21:32:55,672 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 755 transitions. Word has length 42 [2023-11-23 21:32:55,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:55,672 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 755 transitions. [2023-11-23 21:32:55,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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) [2023-11-23 21:32:55,673 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 755 transitions. [2023-11-23 21:32:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 21:32:55,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:55,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:55,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:55,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:55,888 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:32:55,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:55,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2140147383, now seen corresponding path program 1 times [2023-11-23 21:32:55,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:55,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254790240] [2023-11-23 21:32:55,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:55,890 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 [2023-11-23 21:32:55,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:55,891 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:32:55,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:56,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:32:56,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:56,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:56,460 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:56,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254790240] [2023-11-23 21:32:56,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254790240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:56,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:56,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:32:56,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291289190] [2023-11-23 21:32:56,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:56,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:56,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:56,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:56,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:56,463 INFO L87 Difference]: Start difference. First operand 676 states and 755 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 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) [2023-11-23 21:32:57,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:57,459 INFO L93 Difference]: Finished difference Result 899 states and 987 transitions. [2023-11-23 21:32:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:57,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 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 46 [2023-11-23 21:32:57,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:57,468 INFO L225 Difference]: With dead ends: 899 [2023-11-23 21:32:57,469 INFO L226 Difference]: Without dead ends: 899 [2023-11-23 21:32:57,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:57,470 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 246 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:57,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1183 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:32:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2023-11-23 21:32:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 719. [2023-11-23 21:32:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 382 states have (on average 2.020942408376963) internal successors, (772), 713 states have internal predecessors, (772), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:32:57,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 798 transitions. [2023-11-23 21:32:57,503 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 798 transitions. Word has length 46 [2023-11-23 21:32:57,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:57,503 INFO L495 AbstractCegarLoop]: Abstraction has 719 states and 798 transitions. [2023-11-23 21:32:57,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 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) [2023-11-23 21:32:57,504 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 798 transitions. [2023-11-23 21:32:57,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-23 21:32:57,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:57,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:57,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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)] Ended with exit code 0 [2023-11-23 21:32:57,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:57,715 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:32:57,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:57,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1551340397, now seen corresponding path program 1 times [2023-11-23 21:32:57,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:57,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144358755] [2023-11-23 21:32:57,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:57,716 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 [2023-11-23 21:32:57,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:57,717 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:32:57,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:32:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:58,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:32:58,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:58,131 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:32:58,139 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:32:58,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:32:58,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2023-11-23 21:32:58,783 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:32:58,784 INFO L378 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 13 treesize of output 13 [2023-11-23 21:32:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:58,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:58,806 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144358755] [2023-11-23 21:32:58,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144358755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:58,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:58,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:58,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112108847] [2023-11-23 21:32:58,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:58,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:32:58,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:58,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:32:58,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:32:58,809 INFO L87 Difference]: Start difference. First operand 719 states and 798 transitions. Second operand has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:00,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:00,956 INFO L93 Difference]: Finished difference Result 691 states and 771 transitions. [2023-11-23 21:33:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:33:00,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-11-23 21:33:00,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:00,962 INFO L225 Difference]: With dead ends: 691 [2023-11-23 21:33:00,962 INFO L226 Difference]: Without dead ends: 691 [2023-11-23 21:33:00,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:00,963 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 354 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:00,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 550 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 21:33:00,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-11-23 21:33:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 658. [2023-11-23 21:33:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 359 states have (on average 1.8857938718662952) internal successors, (677), 652 states have internal predecessors, (677), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:33:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 703 transitions. [2023-11-23 21:33:00,982 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 703 transitions. Word has length 49 [2023-11-23 21:33:00,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:00,983 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 703 transitions. [2023-11-23 21:33:00,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:00,983 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 703 transitions. [2023-11-23 21:33:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 21:33:00,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:00,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:00,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:01,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:01,197 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:33:01,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:01,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1517128855, now seen corresponding path program 1 times [2023-11-23 21:33:01,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:01,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879391870] [2023-11-23 21:33:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:01,199 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 [2023-11-23 21:33:01,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:01,201 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:33:01,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:01,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:33:01,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:01,541 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:33:01,562 INFO L378 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 19 treesize of output 1 [2023-11-23 21:33:01,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-23 21:33:01,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:01,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:01,611 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:01,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879391870] [2023-11-23 21:33:01,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879391870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:01,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:01,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:33:01,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304277166] [2023-11-23 21:33:01,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:01,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:33:01,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:01,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:33:01,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:01,615 INFO L87 Difference]: Start difference. First operand 658 states and 703 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:04,310 INFO L93 Difference]: Finished difference Result 657 states and 702 transitions. [2023-11-23 21:33:04,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:33:04,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-23 21:33:04,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:04,317 INFO L225 Difference]: With dead ends: 657 [2023-11-23 21:33:04,318 INFO L226 Difference]: Without dead ends: 657 [2023-11-23 21:33:04,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:33:04,319 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 3 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:04,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1513 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 21:33:04,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-11-23 21:33:04,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2023-11-23 21:33:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 359 states have (on average 1.883008356545961) internal successors, (676), 651 states have internal predecessors, (676), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:33:04,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 702 transitions. [2023-11-23 21:33:04,338 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 702 transitions. Word has length 53 [2023-11-23 21:33:04,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:04,339 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 702 transitions. [2023-11-23 21:33:04,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:04,340 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 702 transitions. [2023-11-23 21:33:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 21:33:04,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:04,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:04,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:04,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:04,547 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:33:04,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:04,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1517128854, now seen corresponding path program 1 times [2023-11-23 21:33:04,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:04,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597403507] [2023-11-23 21:33:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:04,549 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 [2023-11-23 21:33:04,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:04,550 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:33:04,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:04,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:33:04,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:04,880 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:33:04,913 INFO L378 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 13 treesize of output 9 [2023-11-23 21:33:04,929 INFO L378 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 19 treesize of output 1 [2023-11-23 21:33:04,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 9 [2023-11-23 21:33:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:04,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:04,999 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:04,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597403507] [2023-11-23 21:33:04,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597403507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:04,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:05,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:33:05,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366868921] [2023-11-23 21:33:05,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:05,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:33:05,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:05,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:33:05,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:05,001 INFO L87 Difference]: Start difference. First operand 657 states and 702 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:08,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:08,406 INFO L93 Difference]: Finished difference Result 656 states and 701 transitions. [2023-11-23 21:33:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:33:08,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-23 21:33:08,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:08,412 INFO L225 Difference]: With dead ends: 656 [2023-11-23 21:33:08,412 INFO L226 Difference]: Without dead ends: 656 [2023-11-23 21:33:08,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:33:08,413 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 1 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:08,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1537 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-23 21:33:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-11-23 21:33:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2023-11-23 21:33:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 358 states have (on average 1.8854748603351956) internal successors, (675), 650 states have internal predecessors, (675), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:33:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 701 transitions. [2023-11-23 21:33:08,430 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 701 transitions. Word has length 53 [2023-11-23 21:33:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:08,430 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 701 transitions. [2023-11-23 21:33:08,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 701 transitions. [2023-11-23 21:33:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-23 21:33:08,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:08,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:08,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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)] Ended with exit code 0 [2023-11-23 21:33:08,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:08,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:33:08,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1356034289, now seen corresponding path program 1 times [2023-11-23 21:33:08,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:08,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396579324] [2023-11-23 21:33:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:08,638 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 [2023-11-23 21:33:08,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:08,640 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:33:08,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:08,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:33:08,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:08,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:08,992 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:08,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396579324] [2023-11-23 21:33:08,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396579324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:08,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:08,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:33:08,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3233227] [2023-11-23 21:33:08,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:08,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:08,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:08,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:08,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:08,996 INFO L87 Difference]: Start difference. First operand 656 states and 701 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:33:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:09,901 INFO L93 Difference]: Finished difference Result 658 states and 704 transitions. [2023-11-23 21:33:09,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:33:09,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-11-23 21:33:09,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:09,907 INFO L225 Difference]: With dead ends: 658 [2023-11-23 21:33:09,907 INFO L226 Difference]: Without dead ends: 658 [2023-11-23 21:33:09,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:09,908 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 1 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:09,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1743 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:33:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2023-11-23 21:33:09,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2023-11-23 21:33:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 359 states have (on average 1.8857938718662952) internal successors, (677), 652 states have internal predecessors, (677), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-23 21:33:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 704 transitions. [2023-11-23 21:33:09,925 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 704 transitions. Word has length 59 [2023-11-23 21:33:09,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:09,926 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 704 transitions. [2023-11-23 21:33:09,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:33:09,926 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 704 transitions. [2023-11-23 21:33:09,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:33:09,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:09,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:09,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:10,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:10,134 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:33:10,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:10,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1172852830, now seen corresponding path program 1 times [2023-11-23 21:33:10,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:10,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653313852] [2023-11-23 21:33:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:10,135 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 [2023-11-23 21:33:10,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:10,137 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:33:10,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:10,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:33:10,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:10,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:10,521 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:10,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653313852] [2023-11-23 21:33:10,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653313852] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:10,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [667930523] [2023-11-23 21:33:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:10,522 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:33:10,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:33:10,528 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:33:10,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-11-23 21:33:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:11,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:33:11,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:11,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:11,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [667930523] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:11,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355963404] [2023-11-23 21:33:11,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:11,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:33:11,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:33:11,087 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:33:11,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 21:33:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:11,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:33:11,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:11,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:11,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355963404] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:11,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:33:11,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-11-23 21:33:11,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859812935] [2023-11-23 21:33:11,431 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:33:11,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:33:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:11,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:33:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:33:11,433 INFO L87 Difference]: Start difference. First operand 658 states and 704 transitions. Second operand has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:33:12,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:12,581 INFO L93 Difference]: Finished difference Result 667 states and 718 transitions. [2023-11-23 21:33:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:33:12,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 60 [2023-11-23 21:33:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:12,590 INFO L225 Difference]: With dead ends: 667 [2023-11-23 21:33:12,591 INFO L226 Difference]: Without dead ends: 667 [2023-11-23 21:33:12,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:33:12,594 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 7 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:12,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1741 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 21:33:12,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-11-23 21:33:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 666. [2023-11-23 21:33:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 366 states have (on average 1.8852459016393444) internal successors, (690), 659 states have internal predecessors, (690), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-23 21:33:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 717 transitions. [2023-11-23 21:33:12,617 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 717 transitions. Word has length 60 [2023-11-23 21:33:12,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:12,618 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 717 transitions. [2023-11-23 21:33:12,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:33:12,618 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 717 transitions. [2023-11-23 21:33:12,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-23 21:33:12,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:12,619 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:12,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:12,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:13,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-11-23 21:33:13,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 21:33:13,241 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-23 21:33:13,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1622797007, now seen corresponding path program 2 times [2023-11-23 21:33:13,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:13,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376854496] [2023-11-23 21:33:13,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:33:13,242 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 [2023-11-23 21:33:13,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:13,244 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:33:13,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2384e471-9bbf-4195-86d2-c1fc32e5942f/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:13,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:33:13,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:33:13,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:33:13,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:13,835 INFO L327 TraceCheckSpWp]: Computing backward predicates...