./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh --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 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:24:19,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:24:19,524 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 17:24:19,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:24:19,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:24:19,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:24:19,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:24:19,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:24:19,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:24:19,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:24:19,556 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:24:19,556 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:24:19,557 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:24:19,558 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:24:19,558 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:24:19,558 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:24:19,559 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:24:19,559 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:24:19,560 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:24:19,560 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:24:19,561 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:24:19,563 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:24:19,564 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 17:24:19,565 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 17:24:19,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:24:19,565 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:24:19,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:24:19,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:24:19,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:24:19,567 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 17:24:19,567 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 17:24:19,568 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 17:24:19,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:24:19,568 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:24:19,568 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:24:19,569 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:24:19,569 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:24:19,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:24:19,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:24:19,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:24:19,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:24:19,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:24:19,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:24:19,570 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:24:19,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:24:19,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:24:19,571 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:24:19,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:24:19,571 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_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2023-12-02 17:24:19,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:24:19,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:24:19,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:24:19,820 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:24:19,820 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:24:19,821 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2023-12-02 17:24:22,647 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:24:22,809 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:24:22,809 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2023-12-02 17:24:22,816 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/data/8fdef5bc6/38fb1cb487fa4981aa49f7edf54377d7/FLAG2d5561299 [2023-12-02 17:24:22,830 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/data/8fdef5bc6/38fb1cb487fa4981aa49f7edf54377d7 [2023-12-02 17:24:22,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:24:22,834 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:24:22,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:24:22,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:24:22,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:24:22,842 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:24:22" (1/1) ... [2023-12-02 17:24:22,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26674fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:22, skipping insertion in model container [2023-12-02 17:24:22,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:24:22" (1/1) ... [2023-12-02 17:24:22,871 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:24:23,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:24:23,068 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) [2023-12-02 17:24:23,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45889afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:23, skipping insertion in model container [2023-12-02 17:24:23,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:24:23,070 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 17:24:23,071 INFO L158 Benchmark]: Toolchain (without parser) took 236.04ms. Allocated memory is still 184.5MB. Free memory was 136.9MB in the beginning and 127.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 17:24:23,072 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 184.5MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:24:23,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.75ms. Allocated memory is still 184.5MB. Free memory was 136.9MB in the beginning and 127.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 17:24:23,074 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 184.5MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.75ms. Allocated memory is still 184.5MB. Free memory was 136.9MB in the beginning and 127.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: 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_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh --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 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:24:24,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:24:24,908 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 17:24:24,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:24:24,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:24:24,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:24:24,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:24:24,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:24:24,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:24:24,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:24:24,948 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:24:24,948 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:24:24,949 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:24:24,949 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:24:24,950 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:24:24,950 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:24:24,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 17:24:24,952 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 17:24:24,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:24:24,953 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:24:24,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:24:24,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:24:24,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:24:24,955 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 17:24:24,955 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 17:24:24,956 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 17:24:24,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:24:24,957 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:24:24,957 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:24:24,958 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:24:24,958 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:24:24,958 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:24:24,959 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:24:24,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:24:24,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:24:24,959 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:24:24,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:24:24,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:24:24,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:24:24,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:24:24,961 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:24:24,961 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:24:24,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:24:24,961 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:24:24,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:24:24,962 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_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2023-12-02 17:24:25,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:24:25,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:24:25,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:24:25,279 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:24:25,279 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:24:25,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2023-12-02 17:24:28,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:24:28,279 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:24:28,280 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2023-12-02 17:24:28,288 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/data/7cf59d749/c17fad367a6f4f74ba315e56aea689dc/FLAG7eaed81f2 [2023-12-02 17:24:28,642 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/data/7cf59d749/c17fad367a6f4f74ba315e56aea689dc [2023-12-02 17:24:28,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:24:28,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:24:28,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:24:28,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:24:28,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:24:28,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:24:28" (1/1) ... [2023-12-02 17:24:28,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46726718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28, skipping insertion in model container [2023-12-02 17:24:28,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:24:28" (1/1) ... [2023-12-02 17:24:28,677 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:24:28,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:24:28,889 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 17:24:28,893 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:24:28,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:24:28,919 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:24:28,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:24:28,957 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:24:28,957 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:24:28,965 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:24:28,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28 WrapperNode [2023-12-02 17:24:28,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:24:28,966 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:24:28,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:24:28,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:24:28,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28" (1/1) ... [2023-12-02 17:24:28,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28" (1/1) ... [2023-12-02 17:24:29,016 INFO L138 Inliner]: procedures = 27, calls = 53, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 274 [2023-12-02 17:24:29,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:24:29,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:24:29,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:24:29,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:24:29,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28" (1/1) ... [2023-12-02 17:24:29,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28" (1/1) ... [2023-12-02 17:24:29,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28" (1/1) ... [2023-12-02 17:24:29,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28" (1/1) ... [2023-12-02 17:24:29,048 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28" (1/1) ... [2023-12-02 17:24:29,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28" (1/1) ... [2023-12-02 17:24:29,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28" (1/1) ... [2023-12-02 17:24:29,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28" (1/1) ... [2023-12-02 17:24:29,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:24:29,064 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:24:29,064 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:24:29,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:24:29,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28" (1/1) ... [2023-12-02 17:24:29,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:24:29,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:24:29,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:24:29,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:24:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:24:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:24:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:24:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 17:24:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 17:24:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 17:24:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 17:24:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 17:24:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-02 17:24:29,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-02 17:24:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 17:24:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 17:24:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 17:24:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:24:29,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:24:29,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:24:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 17:24:29,154 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 17:24:29,294 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:24:29,296 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:24:29,937 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:24:30,408 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:24:30,408 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-02 17:24:30,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:24:30 BoogieIcfgContainer [2023-12-02 17:24:30,409 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:24:30,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:24:30,412 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:24:30,415 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:24:30,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:24:28" (1/3) ... [2023-12-02 17:24:30,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e1f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:24:30, skipping insertion in model container [2023-12-02 17:24:30,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:28" (2/3) ... [2023-12-02 17:24:30,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e1f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:24:30, skipping insertion in model container [2023-12-02 17:24:30,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:24:30" (3/3) ... [2023-12-02 17:24:30,418 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2023-12-02 17:24:30,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:24:30,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-12-02 17:24:30,437 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 17:24:30,516 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-02 17:24:30,546 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 75 transitions, 171 flow [2023-12-02 17:24:30,754 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4563 states, 4061 states have (on average 4.058360009849791) internal successors, (16481), 4562 states have internal predecessors, (16481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:30,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:24:30,775 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;@4cd0639c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:24:30,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-12-02 17:24:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 4563 states, 4061 states have (on average 4.058360009849791) internal successors, (16481), 4562 states have internal predecessors, (16481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:30,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 17:24:30,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:24:30,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 17:24:30,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-12-02 17:24:30,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:24:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash 918822, now seen corresponding path program 1 times [2023-12-02 17:24:30,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:24:30,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692337269] [2023-12-02 17:24:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:30,809 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 [2023-12-02 17:24:30,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:24:30,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 17:24:30,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 17:24:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:24:30,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:24:30,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:31,006 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 [2023-12-02 17:24:31,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 17:24:31,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 17:24:31,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 17:24:31,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 17:24:31,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-12-02 17:24:31,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 17:24:31,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-12-02 17:24:31,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 17:24:31,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 17:24:31,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 17:24:31,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-12-02 17:24:31,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 17:24:31,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-12-02 17:24:31,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 17:24:31,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 17:24:31,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-12-02 17:24:31,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 17:24:31,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 17:24:31,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 17:24:31,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 17:24:31,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-12-02 17:24:31,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 17:24:31,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:31,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 17:24:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:31,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:24:31,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:24:31,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692337269] [2023-12-02 17:24:31,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692337269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:24:31,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:24:31,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:24:31,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363057058] [2023-12-02 17:24:31,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:24:31,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:24:31,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:24:31,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:24:31,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:24:31,338 INFO L87 Difference]: Start difference. First operand has 4563 states, 4061 states have (on average 4.058360009849791) internal successors, (16481), 4562 states have internal predecessors, (16481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:31,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:24:31,762 INFO L93 Difference]: Finished difference Result 4559 states and 16477 transitions. [2023-12-02 17:24:31,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:24:31,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 17:24:31,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:24:31,850 INFO L225 Difference]: With dead ends: 4559 [2023-12-02 17:24:31,850 INFO L226 Difference]: Without dead ends: 4559 [2023-12-02 17:24:31,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:24:31,855 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:24:31,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:24:31,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2023-12-02 17:24:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 4559. [2023-12-02 17:24:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4559 states, 4060 states have (on average 4.058374384236453) internal successors, (16477), 4558 states have internal predecessors, (16477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:32,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4559 states to 4559 states and 16477 transitions. [2023-12-02 17:24:32,139 INFO L78 Accepts]: Start accepts. Automaton has 4559 states and 16477 transitions. Word has length 3 [2023-12-02 17:24:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:24:32,139 INFO L495 AbstractCegarLoop]: Abstraction has 4559 states and 16477 transitions. [2023-12-02 17:24:32,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4559 states and 16477 transitions. [2023-12-02 17:24:32,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 17:24:32,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:24:32,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 17:24:32,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 17:24:32,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:24:32,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-12-02 17:24:32,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:24:32,342 INFO L85 PathProgramCache]: Analyzing trace with hash 918823, now seen corresponding path program 1 times [2023-12-02 17:24:32,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:24:32,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037029316] [2023-12-02 17:24:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:32,343 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 [2023-12-02 17:24:32,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:24:32,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 17:24:32,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 17:24:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:24:32,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:24:32,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:32,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-12-02 17:24:32,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:32,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:32,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:32,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:32,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:32,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:32,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:32,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:32,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:32,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:32,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:32,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:32,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:32,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:32,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:32,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:32,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:32,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 17:24:32,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:32,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:32,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:32,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:32,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:32,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:32,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:32,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:24:32,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:24:32,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037029316] [2023-12-02 17:24:32,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037029316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:24:32,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:24:32,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:24:32,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378059424] [2023-12-02 17:24:32,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:24:32,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:24:32,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:24:32,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:24:32,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:24:32,924 INFO L87 Difference]: Start difference. First operand 4559 states and 16477 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:33,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:24:33,649 INFO L93 Difference]: Finished difference Result 4563 states and 16483 transitions. [2023-12-02 17:24:33,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:24:33,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 17:24:33,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:24:33,691 INFO L225 Difference]: With dead ends: 4563 [2023-12-02 17:24:33,692 INFO L226 Difference]: Without dead ends: 4563 [2023-12-02 17:24:33,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:24:33,693 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:24:33,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 50 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 17:24:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4563 states. [2023-12-02 17:24:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4563 to 4563. [2023-12-02 17:24:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4064 states have (on average 4.055856299212598) internal successors, (16483), 4562 states have internal predecessors, (16483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:33,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 16483 transitions. [2023-12-02 17:24:33,917 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 16483 transitions. Word has length 3 [2023-12-02 17:24:33,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:24:33,917 INFO L495 AbstractCegarLoop]: Abstraction has 4563 states and 16483 transitions. [2023-12-02 17:24:33,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:33,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 16483 transitions. [2023-12-02 17:24:33,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 17:24:33,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:24:33,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 17:24:33,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 17:24:34,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:24:34,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-12-02 17:24:34,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:24:34,120 INFO L85 PathProgramCache]: Analyzing trace with hash 28487250, now seen corresponding path program 1 times [2023-12-02 17:24:34,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:24:34,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428277577] [2023-12-02 17:24:34,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:34,121 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:24:34,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:24:34,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 17:24:34,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 17:24:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:24:34,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:24:34,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:34,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:24:34,252 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:24:34,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428277577] [2023-12-02 17:24:34,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428277577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:24:34,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:24:34,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:24:34,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835916580] [2023-12-02 17:24:34,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:24:34,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:24:34,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:24:34,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:24:34,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:24:34,255 INFO L87 Difference]: Start difference. First operand 4563 states and 16483 transitions. Second operand has 4 states, 4 states have (on average 1.0) 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) [2023-12-02 17:24:34,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:24:34,696 INFO L93 Difference]: Finished difference Result 4564 states and 16482 transitions. [2023-12-02 17:24:34,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:24:34,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) 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 [2023-12-02 17:24:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:24:34,742 INFO L225 Difference]: With dead ends: 4564 [2023-12-02 17:24:34,742 INFO L226 Difference]: Without dead ends: 4563 [2023-12-02 17:24:34,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:24:34,743 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:24:34,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 72 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 17:24:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4563 states. [2023-12-02 17:24:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4563 to 4563. [2023-12-02 17:24:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4064 states have (on average 4.055364173228346) internal successors, (16481), 4562 states have internal predecessors, (16481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 16481 transitions. [2023-12-02 17:24:34,989 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 16481 transitions. Word has length 4 [2023-12-02 17:24:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:24:34,990 INFO L495 AbstractCegarLoop]: Abstraction has 4563 states and 16481 transitions. [2023-12-02 17:24:34,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) 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) [2023-12-02 17:24:34,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 16481 transitions. [2023-12-02 17:24:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 17:24:34,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:24:34,990 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2023-12-02 17:24:34,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 17:24:35,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:24:35,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-12-02 17:24:35,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:24:35,192 INFO L85 PathProgramCache]: Analyzing trace with hash 883018801, now seen corresponding path program 1 times [2023-12-02 17:24:35,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:24:35,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377315740] [2023-12-02 17:24:35,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:35,193 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 [2023-12-02 17:24:35,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:24:35,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 17:24:35,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 17:24:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:24:35,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 17:24:35,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:35,269 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 8 treesize of output 7 [2023-12-02 17:24:35,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:35,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:35,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:35,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:35,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:35,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:35,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 17:24:35,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:35,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:35,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:35,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:35,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:35,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:35,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:35,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:35,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:35,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:35,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:35,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:35,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:35,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:35,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:35,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:35,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:35,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:24:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:36,159 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:24:36,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377315740] [2023-12-02 17:24:36,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377315740] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:24:36,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [834694285] [2023-12-02 17:24:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:36,160 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:24:36,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:24:36,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:24:36,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-02 17:24:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:24:36,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:24:36,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:36,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-12-02 17:24:36,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:36,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:36,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:36,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:36,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:36,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:36,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:36,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:36,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:36,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:36,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:36,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:36,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:36,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:36,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:36,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 17:24:36,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:36,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:36,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:36,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:36,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:36,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:36,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:36,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:24:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:36,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [834694285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:24:36,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776885173] [2023-12-02 17:24:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:36,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:24:36,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:24:36,814 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:24:36,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 17:24:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:24:36,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:24:36,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:36,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-12-02 17:24:36,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:36,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:36,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:36,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:36,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 17:24:37,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:37,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:37,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:37,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:37,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:37,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:37,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:37,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:37,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:37,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:37,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:37,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:37,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:37,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:37,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:37,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:37,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 17:24:37,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 17:24:37,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:37,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 17:24:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:37,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:24:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:37,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776885173] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:24:37,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 17:24:37,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 3, 3] total 9 [2023-12-02 17:24:37,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523472852] [2023-12-02 17:24:37,366 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 17:24:37,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 17:24:37,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:24:37,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 17:24:37,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:24:37,367 INFO L87 Difference]: Start difference. First operand 4563 states and 16481 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:39,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:24:40,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:24:40,157 INFO L93 Difference]: Finished difference Result 4575 states and 16499 transitions. [2023-12-02 17:24:40,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:24:40,158 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 17:24:40,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:24:40,179 INFO L225 Difference]: With dead ends: 4575 [2023-12-02 17:24:40,179 INFO L226 Difference]: Without dead ends: 4575 [2023-12-02 17:24:40,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:24:40,180 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:24:40,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 74 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 17:24:40,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2023-12-02 17:24:40,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 4575. [2023-12-02 17:24:40,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4575 states, 4076 states have (on average 4.047841020608439) internal successors, (16499), 4574 states have internal predecessors, (16499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 16499 transitions. [2023-12-02 17:24:40,299 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 16499 transitions. Word has length 5 [2023-12-02 17:24:40,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:24:40,299 INFO L495 AbstractCegarLoop]: Abstraction has 4575 states and 16499 transitions. [2023-12-02 17:24:40,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:40,299 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 16499 transitions. [2023-12-02 17:24:40,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 17:24:40,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:24:40,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:24:40,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 17:24:40,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-02 17:24:40,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 17:24:40,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:24:40,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-12-02 17:24:40,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:24:40,901 INFO L85 PathProgramCache]: Analyzing trace with hash -657972761, now seen corresponding path program 1 times [2023-12-02 17:24:40,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:24:40,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721024013] [2023-12-02 17:24:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:40,902 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 [2023-12-02 17:24:40,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:24:40,903 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 17:24:40,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 17:24:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:24:41,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 17:24:41,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:41,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:41,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:41,080 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-12-02 17:24:41,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 29 [2023-12-02 17:24:41,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:41,168 INFO L349 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2023-12-02 17:24:41,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 37 [2023-12-02 17:24:41,389 INFO L349 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2023-12-02 17:24:41,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 75 [2023-12-02 17:24:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:24:41,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:24:41,909 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:24:41,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721024013] [2023-12-02 17:24:41,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721024013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:24:41,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:24:41,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:24:41,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246485627] [2023-12-02 17:24:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:24:41,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:24:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:24:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:24:41,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:24:41,911 INFO L87 Difference]: Start difference. First operand 4575 states and 16499 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:42,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:24:42,320 INFO L93 Difference]: Finished difference Result 3845 states and 13582 transitions. [2023-12-02 17:24:42,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:24:42,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 17:24:42,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:24:42,338 INFO L225 Difference]: With dead ends: 3845 [2023-12-02 17:24:42,338 INFO L226 Difference]: Without dead ends: 3845 [2023-12-02 17:24:42,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:24:42,339 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:24:42,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 12 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 17:24:42,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2023-12-02 17:24:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 3845. [2023-12-02 17:24:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3472 states have (on average 3.9118663594470044) internal successors, (13582), 3844 states have internal predecessors, (13582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:42,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 13582 transitions. [2023-12-02 17:24:42,469 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 13582 transitions. Word has length 8 [2023-12-02 17:24:42,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:24:42,469 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 13582 transitions. [2023-12-02 17:24:42,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:24:42,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 13582 transitions. [2023-12-02 17:24:42,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 17:24:42,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:24:42,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:24:42,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 17:24:42,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:24:42,671 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-12-02 17:24:42,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:24:42,671 INFO L85 PathProgramCache]: Analyzing trace with hash -657972760, now seen corresponding path program 1 times [2023-12-02 17:24:42,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:24:42,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577163562] [2023-12-02 17:24:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:42,672 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 [2023-12-02 17:24:42,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:24:42,673 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 17:24:42,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_867abc56-2a3d-48ad-8274-e9b59d9a05c3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 17:24:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:24:42,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 17:24:42,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:42,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:42,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:42,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-12-02 17:24:42,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 17:24:42,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:42,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-12-02 17:24:42,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:42,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-02 17:24:42,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:42,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:42,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:42,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-02 17:24:42,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:42,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-02 17:24:43,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:43,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:43,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-12-02 17:24:43,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:43,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:43,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 17:24:43,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:43,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-12-02 17:24:43,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:43,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-02 17:24:43,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:43,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:43,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-12-02 17:24:43,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:43,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:24:43,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 17:24:44,777 INFO L349 Elim1Store]: treesize reduction 64, result has 65.6 percent of original size [2023-12-02 17:24:44,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 190 [2023-12-02 17:25:51,635 WARN L293 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 1110 DAG size of output: 1128 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 17:26:01,261 WARN L293 SmtUtils]: Spent 6.67s on a formula simplification. DAG size of input: 1107 DAG size of output: 1165 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 17:28:15,902 WARN L293 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 972 DAG size of output: 982 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 17:31:38,707 WARN L293 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 1054 DAG size of output: 1065 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 17:31:48,430 WARN L293 SmtUtils]: Spent 9.71s on a formula simplification. DAG size of input: 1068 DAG size of output: 1073 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 17:31:57,353 WARN L293 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 1226 DAG size of output: 1228 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 17:37:29,930 WARN L293 SmtUtils]: Spent 2.11m on a formula simplification. DAG size of input: 5746 DAG size of output: 5827 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 17:39:02,848 WARN L293 SmtUtils]: Spent 54.83s on a formula simplification. DAG size of input: 4120 DAG size of output: 4110 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)